Tag Archives: Yugoslavian

Yugoslavia’s AK Path: The Venerable M72 RPK

If you’ve ever held a military era Yugo M70B1, you know it’s heavy for an AK. If you thought that was heavy, now lift an M72B1 … now’s that’s heavy. The M70B1 and M72B1 are my favorite AK variants. I’ve owned and sold M76s, M77s, M92s and just keep returning to the M70B1 and M72B1. No, I’m not an underfolder fan so I am specifically talking about the fixed stock rifles. At any rate, let’s look into the history of the M72 specifically.

1. Introduction: Yugoslavia’s Squad Automatic Weapon

In the decades following World War II, the Socialist Federal Republic of Yugoslavia embarked on an ambitious program to establish a self-sufficient domestic arms industry. Spearheaded by the state-owned Zastava Oružje (Zastava Arms) factory in Kragujevac, Serbia, early efforts involved experimenting with captured German designs like the StG 44 before turning towards the globally influential Kalashnikov pattern.1 While Zastava initially faced challenges in reverse-engineering early AK-47 samples, their persistence laid the groundwork for a unique family of Yugoslav small arms.1

Within the tactical doctrine of the Jugoslovenska Narodna Armija (JNA or Yugoslav People’s Army), a clear need emerged for a weapon capable of delivering sustained, accurate suppressive fire at the squad level. This requirement mirrored the Soviet military’s thinking, which led to the development of the RPK (Ruchnoy Pulemyot Kalashnikova or Kalashnikov Handheld Machine Gun) as a companion weapon to the standard AKM assault rifle. Yugoslavia’s answer to this challenge was the Zastava M72 Puškomitraljez (Light Machine Gun).2 Developed in the late 1960s and entering service around 1973, the M72 was undeniably rooted in the Kalashnikov operating system but, true to Zastava’s emerging tradition, incorporated distinct features reflecting Yugoslavian design priorities and manufacturing capabilities.2 The creation of the M72 was more than just filling a tactical niche; it was a statement of Yugoslavia’s growing industrial independence and its approach of adapting, rather than simply replicating, foreign weapon designs to meet its own specific military requirements.

2. Foundation: From the M64 to the M70

The journey to the M72 LMG begins with Zastava’s earlier work on Kalashnikov-type assault rifles. The M64 Automatska Puška (Automatic Rifle), Zastava’s first serious attempt at a domestic AK, served as a crucial, albeit limited-production, developmental stepping stone.1 Though not adopted in large numbers by the JNA, the M64 introduced several features that would become hallmarks of Yugoslav Kalashnikov derivatives. These included a milled receiver, heavily based on the Soviet AK Type 3 but with cosmetic differences like a raised step on the left side, a thicker (though not chrome-lined) barrel, and, significantly, an integral folding grenade sight mounted on the gas block.1 This sight, when raised, also acted as a gas cut-off, safely disabling the gas system for launching rifle grenades – a capability the JNA valued highly. Other M64 innovations included a unique latch mechanism to prevent the dust cover from being dislodged by grenade recoil and, on some prototypes, a bolt hold-open device.1

Building on the M64 experience, Zastava developed the AP M70 (Automatska Puška Model 1970), which was formally adopted by the JNA in 1970.1 The M70 represented a refinement and simplification of the M64 design for mass production. While the complex bolt hold-open mechanism within the receiver was removed to cut costs, Zastava introduced proprietary magazines with follower plates designed to hold the bolt open after the last round, achieving a similar function.1

The enlarged left lobe of the follower catches the bolt and locks the action open thus signalling the rifle is empty.

Crucially, the M70 retained the vital grenade launching sight and gas cut-off system. Early M70s featured milled receivers like the M64, but production soon shifted towards using pressed and pinned barrels and, eventually, receivers made from stamped sheet steel.1 These stamped receiver models, designated M70B1 (fixed stock) and M70AB1/AB2 (underfolding stock), featured receivers notably thicker (1.5mm) than the standard Soviet AKM (1.0mm) and incorporated a distinctive bulged front trunnion.6 This added reinforcement was widely seen as necessary to withstand the repeated stresses of launching rifle grenades.1 The M70B1 also introduced a longer wooden handguard with three cooling slots, another visual identifier of Yugoslav AK variants.6

The M70, particularly in its robust stamped receiver M70B1 configuration, provided the direct technical foundation upon which the M72 LMG was built.2 The M72 inherited the M70’s basic operating mechanism, receiver construction principles, and general layout. The emphasis on receiver strength in the M70, driven largely by the requirement to handle rifle grenades, inadvertently created an exceptionally sturdy platform. This inherent robustness proved highly advantageous when adapting the design for the M72’s intended role as a light machine gun, a role demanding durability under the heat and stress of sustained automatic fire, even though the M72 itself would dispense with the grenade launching capability.2

3. The Birth of the M72: Adapting the RPK Concept

Zastava’s objective in developing the M72 was clear: create a light machine gun based on the M70 assault rifle, mirroring the relationship between the Soviet AKM and RPK.2 Such an approach offered significant logistical advantages, ensuring commonality of ammunition (7.62x39mm M67), operating principles, and many internal parts between the standard issue rifle and the squad’s light support weapon. This simplified training, maintenance, and supply lines for the JNA.

To fulfill the LMG role, Zastava incorporated several features standard to the RPK concept:

  • Longer, Heavier Barrel: The M72 was fitted with a significantly longer and heavier barrel than the M70 – typically cited as 542mm (approximately 21.3 inches) compared to the M70’s 415mm (16.3 inches).1 This increased the muzzle velocity from the M70’s 720 m/s to 745 m/s for the M72, enhancing effective range, and provided greater mass to absorb and dissipate heat during sustained fire.2
  • Integral Bipod: A folding bipod was mounted near the muzzle, providing a stable firing platform when deployed.2
  • Reinforced Receiver: The M72 utilized the robust receiver design principles established with the M70, whether milled in early versions or the heavy-gauge stamped type in later models.4
  • Modified Stock: While Soviet RPKs featured a distinct “clubfoot” stock for better support, early Zastava M72s used a fixed wooden stock shaped similarly to the standard AKM/M70 rifle.4

However, Zastava did not merely copy the RPK. The M72 incorporated distinctive Yugoslav elements:

  • Barrel Cooling Fins: The most visually striking and functionally significant Yugoslav innovation was the inclusion of prominent cooling fins machined into the exposed portion of the barrel, just forward of the handguard.2 These fins increased the barrel’s surface area, promoting more efficient air cooling during prolonged automatic fire sequences. This feature, absent on Soviet or Romanian RPKs, suggests that Zastava’s engineers specifically identified potential barrel overheating under sustained fire as a critical area for improvement in the LMG role and implemented a proactive engineering solution, even though it added complexity to barrel manufacturing. It points towards an independent design assessment focused on enhancing practical performance beyond simply adding barrel mass.
  • Omission of Scope Rail: Unlike many contemporary LMGs and later RPK variants, the standard M72 series typically lacked the side-mounted scope rail common on many Kalashnikov-pattern weapons.4 Optical sights required optional mounts.
  • No Grenade Launching Capability: In a departure from its M70 parent, the M72 design omitted the rifle grenade launching sight and the associated gas cut-off mechanism.2 This simplified the gas block and front sight assembly, focusing the weapon solely on its machine gun role. Also, the top cover lock found on the M70 series was not needed either.

Early development reports also suggest that Zastava experimented with quick-change barrels for the M72, a feature common on heavier machine guns, but ultimately abandoned this complexity in favor of a simpler, fixed-barrel design for the production models.2

4. The Milled Receiver M72: The First Generation

The initial production version of the Zastava M72, entering service around 1973, featured a receiver machined from a solid block of steel, following the manufacturing techniques used for the M64 and early M70 rifles.2 These milled receivers adhered to the Zastava pattern, likely heavier than their Soviet counterparts and incorporating subtle differences in geometry.1 Evidence suggests there might have been minor variations even among these early milled M72s, sometimes retrospectively distinguished as M72A (potentially using M64-style receivers with threaded barrels and remnants of bolt-hold-open provisions) and M72B (using slab-sided receivers with pressed/pinned barrels).10 Common characteristics of this first generation included the heavy, finned 542mm barrel, a fixed wooden stock shaped like that of the M70, an integral folding bipod, standard adjustable iron sights graduated to 1000 meters, and chambering for the 7.62x39mm cartridge.2 The weight was substantial, around 5.0 to 5.5 kg empty.2

Compared to the Soviet RPK of the era, the milled M72 stood apart due to its unique receiver details, the distinctive cooling fins, and the lack of the RPK’s characteristic clubfoot stock.4 Compared to its M70 sibling, the M72 was easily identified by its much longer and heavier finned barrel, the bipod, and the absence of the grenade sight.2 The decision to launch the M72 with a milled receiver likely stemmed from Zastava’s existing production infrastructure and perhaps an initial design emphasis on maximum possible durability, a common attribute associated with milled Kalashnikovs. The subtle variations noted within the milled production run hint at ongoing refinement and potential manufacturing adjustments even before the major shift towards stamped receivers occurred.7

5. Evolution: The Stamped Receiver M72B1 and M72AB1

Mirroring the global evolution of Kalashnikov manufacturing seen in the transition from the AK-47 to the AKM, Zastava eventually shifted M72 production from milled receivers to stamped sheet steel receivers. This move resulted in the M72B1, which became the most common and widely produced variant of the Yugoslav LMG.2 The primary drivers for this change were economic and logistical: stamped receivers are significantly faster and less expensive to manufacture than milled ones, allowing for higher production volumes.1

Despite the shift to stamping, Zastava maintained a focus on robustness. The M72B1’s receiver was formed from a thicker 1.5mm steel sheet, compared to the 1.0mm standard for Soviet AKM and RPK rifles.6 It also incorporated the heavy, bulged front trunnion characteristic of the M70B1 assault rifle, providing extra support at the critical barrel-receiver interface.7 This commitment to heavier construction ensured the stamped M72B1 retained a high degree of strength and durability suitable for its role, even without the solid steel receiver block. Other features remained largely consistent with the earlier milled M72: the signature finned heavy barrel, fixed wooden stock (typically AKM/M70 pattern), and usually a fixed folding bipod.2

Zastava M72B1 exhibited at the Partner 2015 show. The author is Srđan Popović. The photo is from Wikimedia.

Recognizing the need for a more compact weapon for specialized troops, Zastava also developed the M72AB1 variant.2 The defining feature of the M72AB1 was its sturdy, steel underfolding stock, patterned after the one used on the M70AB2 assault rifle.2 This allowed the overall length of the weapon to be significantly reduced for easier storage and maneuverability within vehicles or for airborne operations.3 The M72AB1 is often noted as being quite unique, potentially the only mass-produced RPK-type light machine gun to utilize this style of underfolding stock, which is more commonly associated with assault rifles.2 Some sources also suggest that the bipod on the M72AB1 variant was designed to be detachable, unlike the typically fixed bipod of the M72 and M72B1, further enhancing its adaptability.4

The evolution from the milled M72 to the stamped M72B1 and M72AB1 showcases Zastava’s ability to adapt modern manufacturing techniques for cost-effectiveness while preserving the core Yugoslavian design philosophy emphasizing robustness, evidenced by the heavy-gauge receiver and bulged trunnion. The development of the M72AB1 further demonstrates a tailoring of the basic design to meet specific operational requirements of the JNA, adding versatility to the M72 family.

6. Foreign Production: The Iraqi Al Quds

The Zastava M72’s reputation for robustness and reliability extended beyond Yugoslavia’s borders. Around 1978, Iraq secured a license from Zastava to manufacture the M72 domestically.2 Production was undertaken by the state-run Al-Qadissiya Establishments.2 The Iraqi-produced versions were designated Al Quds (Arabic: القدس), meaning “The Holy,” a reference to Jerusalem.2

Iraq manufactured licensed copies corresponding to both the fixed-stock M72B1 and the underfolding-stock M72AB1 Yugoslav models.3 The Al Quds became a standard issue LMG within the Iraqi armed forces and saw extensive service. This licensing agreement stands as the most significant instance of foreign production for the M72 design. It not only highlights the international regard for the Yugoslav weapon’s qualities but also underscores the maturity and export success of Yugoslavia’s arms industry during that period. Yugoslavia, under Josip Broz Tito, cultivated relationships with many Non-Aligned Movement nations, including Iraq, positioning itself as an alternative arms supplier to the major Cold War blocs. The selection of the Zastava M72 design for licensed production, potentially over the Soviet RPK itself, may reflect specific Iraqi preferences for the M72’s features (like the cooling fins or heavier receiver) or simply more favorable terms offered by Zastava. The Al Quds production significantly contributed to the proliferation of the M72 pattern, particularly throughout the Middle East.2

I think he is holding an Al Quds. When I zoomed into the rear sight block, there appears to be a good deal of script on it even though I can’t read it – more than I would expect to see on a Zastava manufactured M72B1. The image is from Wikimedia and the description is “Iraqi army soldiers assigned to 3rd Battalion, 52nd Brigade, 14th Iraqi Army prepare to assault an objective during a live fire exercise on Tealeaf Island near Basra, Iraq, Oct. 25, 2010. Iraqi forces conducted live fire exercises to better prepare them for real world situations with U.S. soldiers with 1st Infantry Division on hand to provide advice and assistance in support of Operation New Dawn.” The author is SSgt Michael Casteel.
This Iraqi soldier is carrying a M72AB1 pattern rifle. Whether an Al Quds or a Zastava, I am not sure. Most likely an Al Quds. What is unknown is the barrel – it may just be the lighting but I am not sure there were the typical cooling fins between the handguard and the gas block. The photo was obtained from Wikimedia and the photo is attributed to James McCauley. Junly 17, 2005. The author noted “The Iraqi soldiers liked the idea of passing out teddy bears to kids. So, they attached them to their helmets like we did.”

7. Comparative Overview: The M72 Family

The Zastava M72 evolved through several distinct variants, primarily differing in receiver construction and stock configuration. While all shared the core LMG features of a long, heavy, finned barrel and bipod, understanding their key differences clarifies their development path and intended roles.

The following table summarizes the main characteristics of the primary Yugoslav M72 variants:

Zastava M72 Family Variants Comparison

FeatureM72 (Milled)M72B1 (Stamped, Fixed Stock)M72AB1 (Stamped, Folding Stock)
Receiver TypeMilled SteelStamped Steel (1.5mm thickness)Stamped Steel (1.5mm thickness)
Stock TypeFixed Wood (AKM/M70 style)Fixed Wood (AKM/M70 style)Underfolding Metal (M70AB2 style)
BarrelHeavy Profile, Finned, ~542mmHeavy Profile, Finned, ~542mmHeavy Profile, Finned, ~542mm
Bipod TypeFixed FoldingFixed FoldingDetachable Folding (often cited)
Approx. Weight~5.5 kg~5.0 kg~5.0 kg
Overall Length~1025 mm~1025 mm~1025 mm (extended) / ~765 mm (folded)
Key IdentifiersSolid milled receiver; fixed stockStamped receiver, bulged trunnion; fixed stockStamped receiver, bulged trunnion; underfolding stock

Note: Weights and exact bipod configurations can vary slightly based on specific production runs and sources. 2

This comparison highlights the M72 family’s clear lineage. The initial model prioritized ultimate durability via milling. The subsequent M72B1 adopted more efficient stamped construction while retaining robustness through heavier materials and design features like the bulged trunnion. The M72AB1 adapted this stamped platform for portability, catering to specialized military units. Throughout this evolution, the core concept – a squad automatic weapon built on the Yugoslav Kalashnikov pattern, distinguished by its heavy, finned barrel – remained consistent.

8. Legacy and Conclusion

The Zastava M72 proved to be a durable and effective light machine gun. It served as the standard squad automatic weapon for the Jugoslovenska Narodna Armija and continued in service with the armed forces of the successor states formed after Yugoslavia’s dissolution.4 Its ruggedness ensured its appearance in numerous conflicts across the globe, from the Balkan wars of the 1990s to conflicts in Iraq, Afghanistan, and various parts of Africa, often wielded by both state militaries and non-state armed groups.4

Generally regarded as a high-quality Kalashnikov derivative, the M72 earned a reputation for reliability and solid construction.6 Its unique features, particularly the barrel cooling fins, set it apart visually and functionally from its Soviet RPK counterpart and other RPK-pattern LMGs. While perhaps heavier than some contemporaries due to its robust build, this contributed to its perceived durability under harsh conditions and sustained fire.

In the vast family tree of Kalashnikov weapons, the Zastava M72 represents a significant and distinct branch. It exemplifies Yugoslavia’s successful approach to adapting a proven foreign design, enhancing it with unique engineering solutions born from independent assessment and national manufacturing capabilities. The M72 was not merely an RPK clone; it was a Yugoslav Puškomitraljez, tailored to meet specific requirements and built to last. Its enduring presence on battlefields decades after its introduction is a testament to the fundamental soundness of its Zastava M70-derived design, enhanced for the demanding role of a light machine gun, and a lasting symbol of Zastava Oružje‘s Cold War-era prowess in small arms development.

Image Sources

The main photo was obtained from Wikipedia and the exposure increased to show the M72 a bit better. The description of the photo is “U.S. Marine Corps Lance Cpl. Branden G. Cooper, left, with Security Cooperation Task Force Africa Partnership Station 2012, receives familiarization training on a foreign weapon system at Marine Corps Base Camp Lejeune, N.C., May 18, 2012. The training was designed to educate the Marines in order to work effectively with foreign host nations during deployment. Africa Partnership Station is an international security cooperation initiative facilitated by Commander, U.S. Naval Forces Europe-Africa aimed at strengthening global maritime partnerships through training and collaborative activities in order to improve maritime safety and security in Africa.” The Author is SSgt Jemssy Alvarez Jr.

Zastava M72B1 exhibited at the Partner 2015 show. The author is Srđan Popović. The photo is from Wikimedia.

“Iraqi army soldiers assigned to 3rd Battalion, 52nd Brigade, 14th Iraqi Army prepare to assault an objective during a live fire exercise on Tealeaf Island near Basra, Iraq, Oct. 25, 2010. Iraqi forces conducted live fire exercises to better prepare them for real world situations with U.S. soldiers with 1st Infantry Division on hand to provide advice and assistance in support of Operation New Dawn.” The author is SSgt Michael Casteel. The image is from Wikimedia

This Iraqi soldier is carrying a M72AB1 pattern rifle. Whether an Al Quds or a Zastava, I am not sure. Most likely an Al Quds. The photo was obtained from Wikimedia and the photo is attributed to James McCauley. Junly 17, 2005. The author noted “The Iraqi soldiers liked the idea of passing out teddy bears to kids. So, they attached them to their helmets like we did.”

Works cited

  1. Zastava M70 assault rifle – Wikipedia, accessed May 12, 2025, https://en.wikipedia.org/wiki/Zastava_M70_assault_rifle
  2. Zastava M72 | Weaponsystems.net, accessed May 12, 2025, https://weaponsystems.net/system/377-Zastava+M72
  3. Zastava M72 — Википедија, accessed May 12, 2025, https://sr.wikipedia.org/sr-el/%D0%97%D0%B0%D1%81%D1%82%D0%B0%D0%B2%D0%B0_%D0%9C72
  4. Zastava M72 – Wikipedia, accessed May 12, 2025, https://en.wikipedia.org/wiki/Zastava_M72
  5. Застава М72 | Wiki | S.T.A.L.K.E.R Новая Зона. Amino, accessed May 12, 2025, https://aminoapps.com/c/stalkernovai873/page/item/zastava-m72/aPJM_6pc8IEXVBeWmrDqXez6r4bBnlgxr
  6. Zastava M70 | Weaponsystems.net, accessed May 12, 2025, https://weaponsystems.net/system/376-Zastava+M70
  7. What are the Differences between the yugo milled and stamped RPK other than the receivers? (Only yugo rpk) : r/ak47 – Reddit, accessed May 12, 2025, https://www.reddit.com/r/ak47/comments/98wdmy/what_are_the_differences_between_the_yugo_milled/
  8. Zastava M72 | Weaponsystems.net, accessed May 12, 2025, https://development.weaponsystems.net/system/377-Zastava%20M72
  9. The Zastava M72 has arrived as per email from ZUSA. : r/ak47 – Reddit, accessed May 12, 2025, https://www.reddit.com/r/ak47/comments/1hixbvo/the_zastava_m72_has_arrived_as_per_email_from_zusa/
  10. Was the zastava m72 ever produced in a milled version? It’s an original early M72? – Reddit, accessed May 12, 2025, https://www.reddit.com/r/ak47/comments/sjejgv/was_the_zastava_m72_ever_produced_in_a_milled/
  11. Застава М72 — Википедија, accessed May 12, 2025, https://sr.wikipedia.org/wiki/%D0%97%D0%B0%D1%81%D1%82%D0%B0%D0%B2%D0%B0_%D0%9C72
  12. Югославская автоматическая винтовка «Застава» – боевой и гражданский варианты, accessed May 12, 2025, https://www.militaryplatform.ru/10307-jugoslavskaja-avtomaticheskaja-vintovka-zastava-boevoj-i-grazhdanskij-varianty.html
  13. Just picked up the new M72 (low serial #). Here are my initial impressions. : r/zastavaarms101 – Reddit, accessed May 12, 2025, https://www.reddit.com/r/zastavaarms101/comments/1hx06ru/just_picked_up_the_new_m72_low_serial_here_are_my/

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Yugoslavia’s AK Path: The M70 Family of Rifles

Really, my experience with Yugo rifles began with the stamped M70 series. We’ve spent these last few posts providing the backstory, but how did Zastava move from the M64 to the M70 series? Let’s find out.

1. Introduction: Yugoslavia’s Independent Path to the Kalashnikov

In the complex geopolitical landscape following World War II, the Socialist Federal Republic of Yugoslavia, under the leadership of Marshal Josip Broz Tito, charted a course distinct from both the Western NATO alliance and the Soviet-led Warsaw Pact.1 This policy of non-alignment fostered a unique national identity but also necessitated a high degree of self-sufficiency, particularly in defense production.1 Central to this effort was the state-owned Zastava Arms (Zastava oružje) factory located in Kragujevac, Serbia. With roots tracing back to a cannon foundry established in the 1850s 2, Zastava oružje possessed a long and storied history of arms manufacturing for Serbia and later Yugoslavia.2

As the nature of warfare evolved in the mid-20th century, the limitations of traditional bolt-action rifles, like the Mauser patterns previously produced by Zastava 1, became apparent. Yugoslav military planners and engineers recognized the need for a modern assault rifle chambered for an intermediate cartridge. Early research in the 1950s involved studying captured German StG 44 rifles 1, but the future clearly lay with the design rapidly proliferating across the Eastern Bloc: the Kalashnikov AK-47.

However, due to the political rift between Belgrade and Moscow, Yugoslavia could not simply acquire a license to produce the AK-47, as many other nations did.1 Instead, Zastava embarked on an ambitious path of independent development through reverse engineering. The process began in earnest after 1959, when two Albanian border guards defected to Yugoslavia carrying Soviet-made AK-47s.1 These initial samples, while valuable, provided insufficient data for full reproduction. The effort received a significant boost when Yugoslavia covertly purchased a batch of 2,000 AK rifles from an unnamed African nation, which had originally received them as Soviet military aid.1 This allowed Zastava’s engineers – a team including Božidar Blagojević, Major Miloš Ostojić, Miodrag Lukovac, Milutin Milivojević, Milan Ćirić, Stevan Tomašević, Predrag Mirčić, and Mika Mudrić – to meticulously study the design and develop their own manufacturing processes.1

This independent development program, known as FAZ (Familija Automatika Zastava – Family of Zastava Automatic Weapons) 1, aimed to create a whole family of firearms based on the Kalashnikov operating principle. The culmination of the initial phase was the M64 series of prototypes. Building directly upon the lessons learned from the M64, Zastava refined the design to create the Automatska Puška M70 (AP M70), or Automatic Rifle Model 1970. Officially adopted that year, the M70 became the standard infantry weapon of the Jugoslovenska Narodna Armija (JNA – Yugoslav People’s Army) and represented a uniquely Yugoslavian interpretation of the Kalashnikov, distinct from its Soviet progenitor and other licensed copies.7

2. From Prototype to Production: The M64’s Legacy and the Birth of the M70

The Zastava M64, though never mass-produced in its original forms, served as the crucial stepping stone to the M70. The late M64 prototypes established several features that would become characteristic of the Yugoslav AK family. These included a robust milled receiver, heavily based on the Soviet AK Type 3 but featuring unique cosmetic differences like a distinctive raised step on the left side.7 The barrels were threaded into the receiver, similar to the early Soviet AKs, but were slightly thicker and, notably, were not chrome-lined.7

From the very beginning, Yugoslav engineers designed their Kalashnikov variant with the capability to launch rifle grenades, a feature deemed essential.1 The M64 incorporated an integral flip-up grenade sight, typically mounted on the gas block, which also functioned as a gas cut-off mechanism. When raised for firing grenades, the sight would block the gas port, preventing gas from cycling the action and ensuring all propellant force was directed to launching the grenade.1 Other distinctive M64 features included longer wooden handguards with three cooling vents instead of the usual two found on Soviet AKs 5, a unique hollow cylindrical charging handle borrowed from the Yugoslav M59 SKS rifle 1, and, on the M64B folding stock variant, an underfolding stock adapted from the M56 submachine gun.1

A particularly interesting feature of the M64 was its internal bolt hold-open (BHO) mechanism, housed within the receiver.7 This device automatically locked the bolt to the rear after the last round was fired, providing a clear visual and tactile indication that the weapon was empty. However, this internal BHO required specially modified AK magazines with a specific cut to function correctly.11

Despite satisfactory performance in field trials, the JNA did not adopt the M64 in large quantities.7 Military thinking, however, was evolving. Initial reluctance among some senior officers towards issuing automatic weapons to every soldier 1 gradually gave way, potentially influenced by observations of conflicts like the 1968 Soviet invasion of Czechoslovakia, where Soviet troops were universally equipped with AK-pattern rifles.1 The push for a domestically produced automatic rifle gained momentum, leading the JNA to formally approve the Zastava design for serial production in 1970, designated as the AP M70.7

To prepare the design for mass production, Zastava implemented several key changes compared to the M64 prototypes. The most significant alteration was the removal of the M64’s internal, receiver-mounted bolt hold-open mechanism.7 While functionally desirable, the internal BHO added complexity and cost to receiver manufacturing. Zastava opted for a simpler, more cost-effective solution: transferring the BHO function entirely to the magazine. They designed proprietary M70 magazines equipped with follower plates that had flat rear edges. After the last round was fired, this flat edge on the follower would physically block the bolt from closing, achieving the hold-open function without requiring the complex internal linkage of the M64.7 This decision represented a classic engineering trade-off, prioritizing the efficiency and cost-effectiveness of rifle production by simplifying the receiver, while accepting the need for specific, slightly more complex magazines – a consumable item – to retain the desired BHO capability.

Many other features from the M64 were carried over directly into the initial M70 production models. These included the milled receiver construction, the integral grenade sight and gas cut-off system, the distinctive 3-slot handguards, and the non-chrome-lined barrel.7 The unique method of securing the dust cover using a locking recoil spring guide, crucial for preventing it from being dislodged during grenade launching, was also retained.7

3. The Milled Era: Early M70 Variants (M70, M70A, M70A1, M70B, M70AB)

The first Zastava rifles to enter widespread service with the JNA in 1970 were built on robust milled receivers.7 These early variants established the foundation of the M70 family:

  • M70: The baseline model featured the milled receiver and a traditional fixed wooden stock.7
  • M70A: This variant offered increased portability for airborne troops or vehicle crews by incorporating an underfolding metal stock, again paired with the milled receiver.7

These initial production M70 and M70A rifles shared the core characteristics inherited from the M64 program. Their milled receivers were patterned after the Soviet Type 3 AK-47 but possessed distinct Yugoslav features, most notably the smooth left side lacking the large lightening cut found on Soviet and many other milled AKs.7 Zastava also engraved serial numbers just above the magazine well, rather than on the front trunnion as was common Soviet practice.7 Initially, these rifles featured barrels that were threaded into the receiver 7, a strong but relatively labor-intensive method. They retained the integral grenade launching sight/gas cut-off, the 3-slot handguards, the non-chrome-lined barrels, and the unique locking dust cover system.7

Recognizing the growing importance of night vision and optical sights, Zastava soon introduced a variant specifically designed to accommodate them:

  • M70A1: This model was essentially an M70A (milled receiver, underfolding stock) equipped with a factory-installed scope rail riveted to the left side of the receiver, allowing for the mounting of various optical or night sights.7

Shortly after the M70 series entered production, Zastava implemented a significant change to streamline manufacturing, even while still using milled receivers. They transitioned from the time-consuming process of threading barrels into the receivers to the faster and cheaper method of pressing the barrels into the receiver trunnion and securing them with a cross-pin.7 This change mirrored the production techniques already used for the Soviet AKM. Rifles produced with this updated barrel attachment method received new designations:

  • M70B: Milled receiver, fixed stock, with a pressed-and-pinned barrel.7
  • M70AB: Milled receiver, underfolding stock, with a pressed-and-pinned barrel.7

This relatively rapid adoption of pressed-and-pinned barrels, occurring before the eventual switch to stamped receivers, demonstrates Zastava’s proactive approach to optimizing production efficiency. It suggests that engineers were continuously evaluating and implementing cost-saving measures, likely learning from the initial M70 production runs or analyzing contemporary Soviet AKM manufacturing techniques, which had long utilized the press-and-pin method. This incremental optimization occurred even within the constraints of the more complex milled receiver production line.

4. The Stamped Revolution: The M70B1 and M70AB2

By the mid-1970s, seeking further reductions in production time and cost to meet military demands, Zastava followed the path previously taken by the Soviet Union and transitioned from milled receivers to stamped sheet metal receivers for the M70 family.7 However, the Yugoslav approach to the stamped receiver resulted in a design significantly different and more robust than the standard Soviet AKM.

The defining characteristic of the Zastava stamped receiver was its thickness. Instead of using the 1.0mm thick sheet steel common to the AKM and most of its derivatives, Zastava opted for a heavier 1.5mm thick stamping.11 Compounding this increase in strength, Zastava incorporated a front trunnion design based on the one used in the RPK light machine gun.7 The RPK trunnion is substantially larger and more robust than a standard AKM trunnion, designed to withstand the stresses of sustained automatic fire. To accommodate this larger RPK-style trunnion within the stamped receiver, Zastava introduced distinctive bulges on the forward section of the receiver, just ahead of the magazine well.7 These “bulged trunnion” receivers became a visual hallmark of the later M70 series and related weapons like the M72 RPK.

This combination of a 1.5mm thick receiver and an RPK-style bulged front trunnion resulted in an exceptionally durable rifle, significantly stronger and more rigid than a standard AKM.20 The decision to adopt this heavier construction for the standard infantry rifle, not just the squad automatic weapon, strongly suggests a deliberate design philosophy prioritizing extreme robustness and the ability to reliably handle the stresses of repeated rifle grenade launching, which remained a core requirement.7 This “overbuilding” came at the cost of increased weight compared to other AKM derivatives 9, but clearly aligned with Yugoslav military preferences.

The two primary variants featuring this heavy-duty stamped receiver construction became the workhorses of the JNA and subsequent forces:

  • M70B1: Featured the 1.5mm stamped receiver with the bulged RPK-style trunnion and a fixed wooden stock.7 The stock on the M70B1 was often noted for being slightly longer than typical Warsaw Pact AKM stocks and frequently included a thick rubber buttpad, enhancing shooter comfort, particularly when launching grenades.10
  • M70AB2: Combined the 1.5mm bulged trunnion stamped receiver with the practicality of an underfolding metal stock.7 This became one of the most widely produced and recognizable M70 variants.

Both the M70B1 and M70AB2 typically included flip-up night sights integrated into the standard iron sight blocks. These sights utilized either tritium vials (which glow continuously) or phosphorescent paint (which needs to be charged by a light source) for low-light aiming.7 They retained the integral grenade launching ladder sight and gas cut-off mechanism on the gas block 7 and continued the practice of using non-chrome-lined barrels for standard military production.7 The standard Yugoslav fire selector markings were present on the right side of the receiver: “U” for Ukočeno (Safe), “R” for Rafalna (Automatic fire), and “J” for Jedinačna (Semi-automatic fire).7

This is a replica M70 receiver from Childer’s Guns. It does give us a chance to see a few defining characteristics of a Yugo model. Starting at the top left is the hole for the top cover receiver lock. Zastava introduced the lock to prevent the cover from popping off under the heavy recoil of a rifle grenade launch. Moving to the right, you can see the URJ selector markings. Note, while there is a position for “R” Rafalna (Automatic fire), the receiver is actually only configured for semi-automatic as it lacks the third fire control group hole where the pin that holds the full auto sear would go. Thus, no third hole, means this is semi-auto only. Lastly, you can see the the bulge for the bulged RPK trunnion.
Here you can see the RPK-style front trunnion. We can see it was a M70B1 (fixed stock) and the year was 1983. The serial number is on the right. Note, the ATF requires serial numbers to be on the receiver. The Childer’s receivers have their information on the bottom.

The persistent use of non-chrome-lined barrels throughout the main production run for the JNA stands in contrast to Soviet practice, where chrome lining was standard for AKMs to enhance barrel life and corrosion resistance. This Yugoslav decision was likely driven by cost considerations and potentially an established maintenance doctrine that emphasized frequent and thorough cleaning by soldiers, mitigating the risks of corrosion.9 However, this lack of chrome lining could lead to issues, particularly with corrosive ammunition or in humid environments if cleaning was neglected, a problem noted with exported rifles and the Iraqi-made Tabuk copies.9 Indeed, even rifles from various Balkan conflicts arrived in the US aftermarket with heavy bore erosion that would likely have been reduced had there been a sufficient hard chrome lining. It wasn’t until around 2020, largely driven by the demands of the commercial export market (particularly the US ZPAP series), that Zastava began consistently chrome-lining the barrels of its M70 pattern rifles.18

5. Further Specialization: Later Stamped Variants

As military tactics and technology evolved, Zastava continued to adapt the robust M70 stamped receiver platform to meet new requirements, leading to several specialized variants:

Building upon the M70B1 and M70AB2, versions were developed with factory-installed side rails to facilitate the mounting of optical sights and night vision devices:

  • M70B1N: This variant combined the stamped 1.5mm bulged receiver and fixed stock of the M70B1 with an added scope rail on the left receiver wall.7
  • M70AB2N: Similarly, this model added the optics rail to the underfolding stock M70AB2 platform.7

Another line of development focused on integrating dedicated underbarrel grenade launchers (UBGLs), offering potentially greater range, accuracy, and variety of munitions compared to standard rifle grenades. For these models, the original flip-up rifle grenade sight and gas cut-off were typically removed, replaced by a 40mm UBGL, likely the Yugoslav BGP 40 mm:

  • M70B3: This model featured the stamped receiver and fixed stock, but was configured for use with an underbarrel grenade launcher, omitting the standard rifle grenade sight.7
  • M70AB3: The underfolding stock equivalent, this variant also removed the rifle grenade sight assembly to accommodate the UBGL.7
This is a M70AB3 – “AB” designating and underfolder and the “3” that there is a under barrel grenade launcher (UBGL).

The emergence of these ‘N’ (optics-ready) and ‘3’ (UBGL-equipped) variants demonstrates the M70’s inherent adaptability. Zastava successfully modernized the core design to incorporate technologies and meet tactical demands that evolved beyond the original concept focused heavily on integrated rifle grenade capability. This allowed the M70 platform to remain relevant and effective, extending its service life and operational utility by providing specialized tools for enhanced sighting and auxiliary firepower integration.

The success and robustness of the M70 design led to its use as a foundation for other important firearms within the Zastava portfolio, creating a true family of related weapons:

  • M72 RPK: Serving as the squad automatic weapon counterpart to the M70 rifle, the Zastava M72 Light Machine Gun shares the same 7.62x39mm caliber and operating principles. Crucially, it utilizes the same heavy-duty 1.5mm stamped receiver with the bulged RPK-style front trunnion found on the later M70 rifles.7 Key differences include a longer, heavier barrel (often featuring cooling fins to aid heat dissipation during sustained fire), a standard integral bipod, and sometimes modified rear sights.8 The shared receiver construction underscores the inherent strength Zastava built into their AK platform.
  • M92 Carbine: For roles requiring a more compact weapon, such as for vehicle crews, special forces, or close-quarters battle, Zastava developed the M92 carbine.7 Essentially a shortened version of the M70AB2, the M92 retains the 7.62x39mm chambering, gas operation, and underfolding stock. Its most defining feature is its significantly shorter barrel, typically around 10 inches (254mm) long.8 To manage the increased muzzle blast from the short barrel, the M92 is usually fitted with a distinctive conical flash hider or muzzle booster.31 Despite the shorter barrel, the 7.62x39mm cartridge retains much of its effectiveness at typical carbine engagement ranges.31
  • The Iraqi Connection: Tabuk The M70’s influence extended beyond Yugoslavia’s borders through a significant technology transfer agreement with Iraq. In the late 1970s and early 1980s, Zastava provided machinery and technical assistance to Iraq’s Al-Qadissiya Establishments to set up domestic production of AK-pattern rifles.9 The resulting Iraqi rifles were collectively known as the Tabuk.
  • The standard Iraqi Tabuk assault rifle was essentially a direct copy of the Zastava M70B1.7 Early production Tabuks faithfully replicated the M70B1’s features, including the 1.5mm stamped receiver with bulged trunnion, 3-slot handguards, and the integral grenade launching sight (though this was omitted on later, simplified versions).9 Critically, they also copied the non-chrome-lined barrels, which proved problematic in Iraqi service due to harsh conditions and potentially less rigorous cleaning discipline compared to the JNA.9
  • Iraq also produced the Tabuk Sniper Rifle, a designated marksman rifle (DMR) based not on the M70 rifle, but on the Zastava M72 RPK.7 While visually similar to an RPK, the Tabuk DMR featured a longer, but thinner, barrel than the M72, was modified for semi-automatic fire only, included an optics rail on the receiver, and sported a distinctive skeletonized wooden buttstock with a cheek rest.24 It retained the 7.62x39mm chambering, making it effective out to intermediate ranges (around 600 meters) but lacking the reach of true sniper rifles chambered in full-power cartridges.24
  • Iraqi production quality reportedly declined over time, especially after the Iran-Iraq war and subsequent sanctions.9

The development of the M72 LMG and M92 carbine, alongside the licensed production of Tabuk rifles in Iraq, highlights the M70’s significance as more than just Yugoslavia’s standard rifle. It served as a versatile and robust foundational platform adaptable to various infantry roles and was successfully exported, demonstrating Zastava’s capabilities as an arms manufacturer and technology partner during the Cold War era. The shared heavy-duty receiver across the M70B1/AB2, M72, and Tabuk variants became a defining characteristic of this branch of the Kalashnikov family tree.

7. Zastava M70 Family Variations: A Comparative Overview

The following table summarizes the key characteristics and differences between the main variants within the Zastava M70 family, tracing their evolution from the late M64 prototype stage through the various milled and stamped receiver models, as well as related designs.

Zastava M70 Family Variations Summary

Model DesignationReceiver TypeTrunnionBarrel AttachmentStock TypeGrenade Sight/Gas CutoffOptics RailKey Distinguishing Features
M64 (late proto)MilledStandardThreadedFixed Wood (A) / Underfolding (B)YesNo3-slot HG, Internal BHO, Grenade sight, M59/M56 parts (handle/stock)
M70MilledStandardThreadedFixed WoodYesNoFirst production model, 3-slot HG, Grenade sight, Dust cover lock, Smooth left receiver
M70AMilledStandardThreadedUnderfolding MetalYesNoFolding stock version of M70
M70A1MilledStandardThreadedUnderfolding MetalYesYesM70A with added optics rail
M70BMilledStandardPressed & PinnedFixed WoodYesNoM70 with pressed/pinned barrel
M70ABMilledStandardPressed & PinnedUnderfolding MetalYesNoM70A with pressed/pinned barrel
M70B1Stamped (1.5mm)Bulged RPK-stylePressed & PinnedFixed WoodYesNoFirst stamped model, Bulged trunnion, Night sights, Rubber buttpad (often)
M70AB2Stamped (1.5mm)Bulged RPK-stylePressed & PinnedUnderfolding MetalYesNoFolding stock version of M70B1, Bulged trunnion, Night sights
M70B1NStamped (1.5mm)Bulged RPK-stylePressed & PinnedFixed WoodYesYesM70B1 with added optics rail
M70AB2NStamped (1.5mm)Bulged RPK-stylePressed & PinnedUnderfolding MetalYesYesM70AB2 with added optics rail
M70B3Stamped (1.5mm)Bulged RPK-stylePressed & PinnedFixed WoodReplaced by UBGLNoM70B1 adapted for UBGL (grenade sight removed)
M70AB3Stamped (1.5mm)Bulged RPK-stylePressed & PinnedUnderfolding MetalReplaced by UBGLNoM70AB2 adapted for UBGL (grenade sight removed)
M72 (RPK)Stamped (1.5mm)Bulged RPK-stylePressed & PinnedFixed Wood (RPK)NoNoLMG version, Heavy/finned barrel, Bipod, RPK sights
M92 (Carbine)Stamped (1.5mm)Bulged RPK-stylePressed & PinnedUnderfolding MetalNoNoShortened M70AB2, Muzzle booster/flash hider
Tabuk RifleStamped (1.5mm)Bulged RPK-stylePressed & PinnedFixed WoodYes (early) / No (late)NoIraqi copy of M70B1
Tabuk DMRStamped (1.5mm)Bulged RPK-stylePressed & PinnedFixed SkeletonizedNoYesIraqi DMR based on M72, Semi-auto only, 7.62x39mm, Optics rail, Skeleton stock

Note: Barrel lining refers to original military production; modern commercial Zastava ZPAP M70 variants imported into the US typically feature chrome-lined barrels.18 HG = Handguard.

This table provides a clear, side-by-side comparison, highlighting the evolution of receiver types, barrel attachment methods, stock configurations, and specialized features across the Zastava M70 lineage, fulfilling the need for a consolidated overview of the family’s variations.

8. In Service: The M70 in Yugoslavia and Beyond

Formally adopted in 1970, the Zastava M70 quickly became the standard infantry rifle of the Jugoslovenska Narodna Armija (JNA), gradually replacing older firearms like the Zastava M59/66, itself a Yugoslav derivative of the Soviet SKS carbine.7 For over two decades, the M70, particularly the robust stamped M70B1 and M70AB2 variants, served as the primary armament for Yugoslav soldiers.

The rifle’s most prominent and tragic service came during the brutal Yugoslav Wars of the 1990s. As the federation violently disintegrated, the vast stockpiles of JNA weaponry, including millions of M70 rifles, fell into the hands of all warring factions.6 The M70 became a ubiquitous sight on the battlefields of Croatia, Bosnia and Herzegovina, and Kosovo, wielded by soldiers and paramilitaries on all sides, making it an enduring, somber symbol of those conflicts.7

Following the wars, the M70 remained in service with the armed forces of the newly independent successor states, including Serbia, Bosnia and Herzegovina, Montenegro, North Macedonia, and Slovenia.6 While some nations, like Croatia (which donated its stocks to Ukraine 7) and Slovenia, have largely transitioned to NATO-standard firearms, the M70 continues to serve in various capacities across the former Yugoslavia.

Beyond the Balkans, the Zastava M70 achieved significant global proliferation through both official exports and the illicit arms trade fueled by the Yugoslav Wars.10 Zastava Arms exported the rifle widely during the Cold War and after, with known users including Iraq (which also produced the Tabuk copy), Cyprus, Jordan, Lebanon, Palestine (PLO and PNA), and numerous African nations such as Angola, Burkina Faso, Liberia, Libya, Rwanda, South Sudan, Yemen, and Zaire (used by Serbian mercenaries).7 M70s captured from Iraq were even used by Iran.7 Rifles from former Yugoslav stocks have surfaced in conflicts across the globe, including the War in Afghanistan (provided as US military aid to Afghan forces), the Syrian Civil War, the conflict in Mali, and most recently, the Russian invasion of Ukraine, where M70s were donated by Croatia and purchased by the UK for training Ukrainian troops.6 The rifle’s presence in European terror attacks, sourced from Balkan black markets, underscores the dangerous legacy of weapons proliferation from the Yugoslav conflict.33

Ramadi police officer with either a Zastava M70 or an early model Tabuk wherein they retained the grenade sight, 2008. Given this photo was taken in Iraq, it is most likely to be an early model Tabuk but we’d need more detail than the photo can give, notably the markings. (obtained from Wikimedia – the author submitted it to the Arabic Wikipedia and used the author name of: هــشـام or “Hisham” in Roman script)
A French soldier from the Military Instruction Advisory Detachment (IMAD) of the 5th Regiment International Army Overseas (RIAOM) trains Somali policemen on the assembly and disassembly of the AK-47 assault rifle in Baidoa. The French were providing training for the Somalian police in Baidoa and Buurhakaba. (Obtained from Wikimedia and the author was Staff Sgt. Jeffrey T Brady)
Iraqi policemen from the Dhi Qar province pull security during an air assault training event with Soldiers of the 2nd Battalion, 12th Cavalry Regiment, 4th Brigade Combat Team, 1st Cavalry Regiment, at Camp Cedar, Iraq, March 2. Date: 02.25.2009. The rifle appears to be a M70AB – zooming in I can see the “URJ” Yugoslav selector markings vs. arabic script that a Tabuk would have. (Obtained from Wikimedia and the author was DVIDSHUB)

The sheer scale of the M70’s production, estimated at around 4 million units 7, combined with its inherent durability and the chaos surrounding the JNA’s dissolution, ensured its widespread and lasting presence. Its appearance in conflicts decades after its introduction speaks volumes about its robust design, the vast quantities produced, and the long-lasting impact of regional instability on global arms trafficking. The rifle’s legendary toughness undoubtedly contributes to its longevity in the harsh conditions often found in these conflict zones.

9. Conclusion: The Enduring Legacy of the Yugoslav AK

The Zastava M70 family stands as a significant and distinct chapter in the global story of the Kalashnikov rifle. Born from Yugoslavia’s unique geopolitical position and drive for self-reliance, it represents an independent, unlicensed development path that resulted in a firearm tailored to specific national requirements.1 Its defining characteristics – the emphasis on extreme robustness evident in the thicker 1.5mm stamped receivers and RPK-style trunnions, the integral grenade launching capability that was a design priority from the outset, the evolution of the bolt hold-open feature, the distinctive three-slot handguards, and the long-standing use of non-chrome-lined barrels in military production – set it apart from its Soviet AKM contemporaries and most other licensed variants.7

While often praised for its exceptional durability and reliability, sometimes considered superior to other AKM derivatives 1, this robustness came at the cost of increased weight.9 The M70 proved itself adaptable, evolving from early milled receiver models to the ubiquitous stamped variants, and later incorporating features like optics rails and underbarrel grenade launchers to meet modern tactical needs.7 Its foundational design spawned a successful family of weapons, including the M72 LMG and M92 carbine, and served as the basis for Iraqi Tabuk production.9

From its decades of service as the standard rifle of the JNA, through its tragic ubiquity in the Yugoslav Wars, to its continued use by successor states and proliferation across global conflict zones, the Zastava M70 has carved an undeniable legacy.6 Its enduring presence is further cemented by continued production and popularity in the civilian market, particularly in the United States with the ZPAP M70 line.13 The Zastava M70 remains a highly regarded, distinctively durable, and historically significant member of the vast Kalashnikov family, a testament to Yugoslav engineering and a tangible link to a complex period of European history.


Image Source

The main photo is of a Zastava M70-AB3 from Wikimedia. It was taken on July 1, 2011 by Соколрус
https://commons.wikimedia.org/wiki/File:Zastava_Arms_M70-AB3.jpg

Ramadi police officer with either a Zastava M70 or an early model Tabuk wherein they retained the grenade sight, 2008. Given this photo was taken in Iraq, it is most likely to be an early model Tabuk but we’d need more detail than the photo can give, notably the markings. (obtained from Wikimedia – the author submitted it to the Arabic Wikipedia and used the author name of: هــشـام or “Hisham” in Roman script)

A French soldier from the Military Instruction Advisory Detachment (IMAD) of the 5th Regiment International Army Overseas (RIAOM) trains Somali policemen on the assembly and disassembly of the AK-47 assault rifle in Baidoa. The French were providing training for the Somalian police in Baidoa and Buurhakaba. (Obtained from Wikimedia and the author was Staff Sgt. Jeffrey T Brady)

Iraqi policemen from the Dhi Qar province pull security during an air assault training event with Soldiers of the 2nd Battalion, 12th Cavalry Regiment, 4th Brigade Combat Team, 1st Cavalry Regiment, at Camp Cedar, Iraq, March 2. Date: 02.25.2009. The rifle appears to be a M70AB – zooming in I can see the “URJ” Yugoslav selector markings vs. arabic script that a Tabuk would have. (Obtained from Wikimedia and the author was DVIDSHUB)

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