Folks, there is a really cool page in the Russian language that has an excellent breakdown of the Kalashnikov Concern’s AK-12. You can visit it and get a ton of info . A trick I would recommend is to use your browser’s ability to translate a webpage – it will not be perfect but you sure will get a much better idea of what they are talking about.
We also have a great video in English that gives an overview of the AK-12K, AK-15K AND RPK-16K if you are interested. Click here for that.
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Please note, the image shown above is from the article and remains the property of its respective owner.
Folks, the number one firearm at the top of my bucket list is a Dragunov. I’ve wanted one for years and years and maybe if I get lucky and a firm either decides to make or import them, I’ll finally get to own one. In the mean time, I enjoy reading articles and videos about them.
Ian McCollum of Forgotten Weapons recently interviewed Max Popenker, a noted Russian small arms researcher, about the history of the Dragunov. The video goes into great detail about the historical context that led up to the design contest that resulted in the original Snáyperskaya Vintóvka sistém’y Dragunóva obraz’tsá 1963 goda (SVD-63). It’s really the best I’ve seen in terms of history and includes the modern SVD-M.
The three prototype designs competing for the Soviet sniper rifle from Simonov, Konstantinov and Dragunov. The SVD’s principle designer was Yevgeny Dragunov and he was a notable target shooter and this undoubtedly gave him significant insight into what was needed.The SSV-58 model from 1959 compared to the accepted 1963 SVD. Note the removal of the diopter sights, addition of a muzzle device and bayonet lug.Max explained there were bout 5=7,000 SVDs made each year and sometimes over 10,000.And this is the current model – the SVD-M. Note the heavy shorter barrel, modern optics rail, adjustable scope and adjustable side folding stock.
And Here’s The Video
I hope you enjoyed the video as much as I did!
Please note that all photos were extracted from the video and remain the property of their resective owner(s),
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Surprisingly, Zastava has sold all of their first batch of M91 rifles. I say “surprisingly” because I thought the steep price would deter buyers. Atlantic Firearms had it listed at $3,144.99 on 7/10 and pretty much sold out the same day. I guess I should say I was alerted they were there on 7/10 and they were gone by the time I got there. [Note: This is the link to Atlantic’s listing.]
Zastava USA is posting photos of their new M70 PAP rifles and someone asked if more M91s would be coming in. They replied that there would be more in August. Click here for the thread.
I am not sure who else got the M91 besides Atlantic so there might be some others floating around. Two have popped up on Gunbroker but without photos and that always makes me suspicious. [Click here to do a search]
Sorry, but I will not be purchasing one of these rifles at this price point. I simply can’t afford it. I have the M76 (8mm Mauser), the M77 (.308) and will stick with them. I’m hoping the rumors of a FEG Dragunov being imported pan out. [Note, my M77 cost me something like $6-700 from Centerfire hence my disappointment at the price of the M91.]
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I wish I had better news but Youtube cancelled the channel for the Kalashnikov Concern so the video is no longer available. I am leaving the post up so at least you can see the screen shots.
Because of the import restrictions of the Russian firm Kalashnikov Concern, Americans will not get a chance to see a cool new rifle just released by them. Their AK TR3 rifle is a civilian version of the modern AK-12 and will be available in both 5.45×39 and 7.62×39 cartridges. [Click here for a previous post that goes into the AK-12 in more detail.]
The AK TR3 is identical to the military AK-12. Note that it has three fire control group pins.The AK TR3 is chambered for both traditional Russian cartridges, the 5.45×39 and 7.62×39
Yeah, I sure wish I could buy an AK TR3 but given the political issues between our countries, that is not going to happen. Regardless, it looks like a very slick rifle and I’ll just have to ogle it from afar.
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All images were extrated from the video and remain the property of their respective owner.
Folks, I have built a couple of Polymer80 pistols – A Glock 17 clone and a 34 clone and really like them. When I heard that Polymer80 was going to import the Israeli Military Industries (IMI) Kidon Pistol Conversion Kit I got pretty excited. My first real pistol was a .44 Magnum IMI Desert Eagle in 1990. The Desert Eagle was awesome so I had high expectations for the Kidon Pistol Conversion Kit. So far, I must admit that I am disappointed. This may change with more use but want to pass on my experiences to you. To be blunt, for me it is a range toy at best in its present incarnation.
The concept was cool – have a chassis readily available in a soft-case in the trunk of your car, or where ever, that you could slide a pistol into with no tools and instantly have a much more stable platform to work with that could also enable you to mount an optic and light. This would aid accuracy immensely and you could imagine a potential appeal to law enforcement or others who might need an impromptu pistol caliber carbine.
I could definitely benefit from something like this but for a completely different reason. I was born with a hereditary tremor, also sometimes called a “necessary tremor”, that causes my hands to shake a bit. I’ve had it my whole life and I can work around it most of the time except when holding a pistol at arms length. Andrew Zachary, my CPL instructor, gave me some great tips to improve my groups for self-defense but I will never be a great pistol shooter. However, if you give me carbine or rifle, I can do a heck of a lot better off hand and hold my own with most folks if I have a rest. So, I was really looking forward to using the Kidon – not just to review it.
When Polymer80 started selling them after the 2019 SHOT show, the price was $525 but it dropped down to $350 fairly quickly so I bought one. A plus was that they included a pre-installed adapter for the Polymer80 pistol frames that I am a fan of. If you like building firearms, you have to try one of their frames – it’s like a double-stack 1911 in terms of the angle and girth but it uses Glock parts. With that said, let’s get back to the Kidon.
What Pistol Did I Test With?
For testing, I only used my Polymer80 PF940V2 frame Glock 17 clone. I didn’t test any other models. So please bear in mind you might have different results with other pistols.
The test pistol is my personal Polymer80 PF940V2 Glock 17 build. Notice the slight bevel on the front of the slide. I don’t think that affected the fit in the frame any. When I inserted the pistol into main frame of the Kidon, it was the lower that could be pushed in too far. The slide did not move. The PF940V2 frame has not been altered in any way.
Opening the Box
I ordered the Kidon direct from Polymer80 and they were pretty quick to ship the unit. It arrived in a surprisingly large box. It turned out that the Kidon unit includes a soft case with a sling, adjustment tool and room for the M4 stock or brace.
The Kidon Pistol Conversion Kit includes an interesting custom soft case with carrying handle and shoulder strap. That is Molle webbing at the bottom. I wish it was higher or they had put more of the webbing on the bag so long magazines would not extend below the case.Pretty cool layout. I was starting to feel my inner James Bond unexpectedly. The Kidon was looking pretty cool so far.
So, I did a quick skim of the manual to find out how to install the pistol. I’d not seen anything quite like the Kidon before and couldn’t readily guess how it all worked.
Inserting the Pistol Into the Main Frame
Basically the pistol slides forward into the chassis and is secured in place by the front rail. It is length sensitive and this is why some pistols, such as my G34 will not fit it. My Polymer80 G17 went right in. Note, it uses the Polymer80 PF940V2 full size frame and it is what I used during my evaluation – you may have better success with other models of pistols.
Okay, this is looking like something from Star Wars. The screw just above the rear of the angled fore grip (AFG), is for adjusting the clamp. Note, the AFG is included with the Kidon and is removable. Note, the main frame as IMI calls it, or the main part of the chassis as I would describe it, is a polymer. The part in front of the pistol’s barrel is a heat shield / blast shield and is made from aluminum – I think that was a good idea on their part.The big Front Lock Lever that says “Flip Up To Lock” is what clamps down on the rail of the Polymer80 frame.
Let me share some of my observations at this point:
P1: The pistol does not intuitively slide into the “main frame assembly” of the Kidon chassis. I have yet to pick the two pieces up (the pistol and the main frame) and get them to go together with the first try. I’ve got a trick that works better though – I hold the Kidon’s main frame vertically and settle the pistol into the clamp.
P2: The clamp is not as secure as I would like and it does not lock the pistol parallel to the top rail. This causes a problem when inserting the rear locking assembly and I’ll come back to this. It also means you can flex the Polymer80 in the chassis. When I sighted in my red dot, with a laser through the bore, I found I could change the impact point dramatically depending on how hard I pushed or pulled on the pistol’s grip.
P3: The pistol can go in too far. With a Glock, pushing the slide back just a bit will disable the trigger and that can easily happen if you are in a rush. I’m getting a better feel for this but it really needs a better way to insert the frame and have it stop and lock in the proper position. I install vertically per the above and stop when the frame comes to the initial rest and no further.
Some of the above I’ve gotten better at with practice and will likely improve further but am not keen on the fumbling around. Let’s continue with the review.
Installing The Rear Locking Assembly
The Rear Locking Assembly (RLA) pushes the pistol from the rear into the Main Frame and holds it at the proper angle relative to the bore. IMI made this modular by adding a Rear Adapter Clamp. This adapter enables the Kidon to support an absolute ton of different pistols. It comes with the adapter for the Polymer 80 frame pre-installed so I did not need to mess with that.
The Rear Locking Assembly (RLA) is the part just below the rear of the main frame in this photo. It is held in place by the takedown pin in the main frame (sticking out in this photo) and two tabs that are in the sides of the the RLA. Note the pistol you see is my full size Glock 17 clone built on a Polymer80 PF940V2 frame.Here’s a close up of the RLA. The forward part is the modular rear adapter clamp. You can just see the tabs in the middle that mate with the rectangular holes in the main frame as well.This is the modular rear adapter clamp that is specific for Polymer80 pistols. It actually slides over the beavertail part of the receiver just a tad and both pushes it forward and holds it in place vertically as well.You can see the rear locking adapter pushing the beaver tail area of the Polymer80 frame into position. It’s spring loaded to apply pressure.Here you can see the tabs better plus the rear nut. I don’t know what else to call it. If you remove this nut, you can install an M4 gas tube and then whatever stock or brace you want.
Installing A Brace
In other parts of the world without our crazy short barreled rifle (SBR) laws, the unit would have an IMI brand M4-style stock on it but in the US, it ships with a nut that has a sling swivel in it instead. It does give us options though and if we don’t go the SBR registration route, we can install a brace at least. I opted for the very well done SB Tactical SBA3. Hint – use a fixed wrench when removing the end nut on the chassis – I used an adjustable wrench and it rounded it over a bit. That was my fault – I knew better but was in a rush.
Be sure to back out the set screw that locks the nut or gas tube into position.Here’s the SB Tactical SBA3 brace – it has three adjustment positions (fully collapsed, middle and fully extended) and is very well made.The brace simply screws into the RLA. Note, I bought a basic castle nut and installed it just to lock things in place even further. I’m old school that way.This example shows that the adapter missed the beaver tail and went underneath it lifting the pistol up at an angle. If you grab the pistol now you can move it around and it can still fire.
It is a bit of a challenge to get that rear locking assembly to line up and go into the main frame. If you aren’t careful and purposefully watching the pistol, the rear adapter clamp may go under the rear of the pistol and cant it up at an angle. In other words, the bore of the pistol is now pointing down towards the front bottom of the Kidon’s front heat shield and the pistol can still fire.
I’ve dry fired it during testing when it was angled like that but not with a live round. I’m real, real careful now to inspect the system before I load ammo. I think the bullet may just miss the lower part of the heat shield but I say that by visually looking at the direction of the barrel’s bore when I push the back of the pistol up as high as it will go. At the very least your point of impact will be a lot lower than you expected due to the angle.
Sights, Optics and a Curiously Angled Top Rail
Let’s start with what I noticed very shortly after taking the Kidon’s main frame out of the case. The top rail is not flat. It angles upward just before the ejection port and just forward of it, it angles back down. I asked Polymer80 about this and they said they were all that way. Why? I have no idea. As it turns out I could still get my Vortex Crossfire Red Dot to zero so I’m not going to worry about even though the purist in me wishes it was flat.
Can you see the slope to the rail before and after the ejection port?This steel rule is sitting square on the rail on the left side of the photo. You can definitely see the angle here.
Well, I installed Magpul backup polymer sights and then a Vortex Crossfire Red Dot sitting up on a tall quick detach mount from American Defense – their model AD-T1-10. I did this to line up with the sights and couldn’t quite get it all to line up. I don’t think that misshapen top Picatinny rail was doing me any favors even though I could get the red dot to line up with the bore laser during sighting in. So, I left the sights as a backup but am no longer trying to co-witness.
Vortex Crossfire Red Dot on a tall AD-T1-10 Quick Detach mount with a Magpul rear sight behind it,Here’s what my Kidon case looks like as of my writing this post.
Do I have anything good to say about it?
It looks cool. The chassis is a cool concept along with the tool-less design. It does provide a lot more stability than the pistol alone – until you flex the pistol in the chassis and change the point of impact, which defeats the whole point of having the chassis – to improve accuracy. I like that they used aluminum for a heat shield and not just polymer. I like that they enabled the use of an M4 gas tube for braces and stocks. That’s about it.
The Verdict: Based on my experience, it’s a range toy
I really, really wanted to post a glowing report. At this point, it’s a range toy and not fit for any form of real defensive use. Could the problems be me or my particular Polymer80? They could be but I doubt all of them are.
At this point, it’s my opinion that it takes way too much care to assemble this thing and make sure it all goes together correctly. I do plan on taking it to the range but I don’t see its use evolving for me beyond that for the following reasons:
Imagine the adrenaline is pumping and you are in a rush – fine motor skills are going to greatly impaired — there is a real high risk that the pistol will be shoved in to far and push the slide back. That slight push on the slide is going to lock the Glock-style trigger safety and not fire after assembly. You would have to test after you insert the pistol that it can still fire.
Getting that rear locking assembly to mate up and go into the main frame is real hard for me. Maybe it will improve over time but I doubt I could do it in a rush with my heart pounding and hands shaking.
You may pull down, push up or otherwise shift the pistol in the frame and change the zero. The combination of the front and rear clamps does not hold the pistol securely enough – I did not try tightening the front screw down to the point that the front locking lever will not release – that defeats the purpose. If the whole intent was to improve accuracy but the pistol can shift inside of the frame when too much pressure is applied to the pistol grip, then what is the value?
Lastly, during the assembly process the user may fail to notice the pistol is canted downward in the frame and risk shooting the front bottom of the aluminum heat shield of the frame or at least way lower than you expected because of the angle. This happens maybe half the time unless I purposefully watch and make sure the rear adapter clamp properly engages the rear of the receiver.
Bottom line: I would carry a dedicated backup firearm before I would ever trust this thing in a defensive situation – at least based on my experience with my Polymer80. I did not test any other pistol models. Sorry I don’t have better news. If you try the Kidon and have better luck, that is great. As for me, I wish I had not spent $350. It’s a great concept but it needs significant refinement to improve ease of assembly, reliability and safety before being put in a defensive/combat/high-stress situation.
By the way, I hate posting something like this because it is a cool design but I want to give folks my honest opinion. Do your research and read other reviews and decide for yourself. I’m actually going to shoot more with it at the range and see if I can figure out techniques that work better. If I discover better ways or things that I was doing wrong, I’ll certainly post updates.
12/1/19 Update: I sold it. The design just did not work for me. I can’t recommend this for any use – not for the range and certainly not for defensive use.
4/26/20 Update: 478 page views up to now and not one person has emailed me to voice support of the Kidon. That ought to tell you something.
8/3/21 Update: Almost two years later and not one person has defended the system which has also largely disappeared other than popping up on Gunbroker from time to time or a few niche outlets.
3/14/24 Update: Almost five years and over 1,900 views, not one defender of the Kidon has ever contacted me. One fellow reached out and said he didn’t need to be politically correct and called it a “piece of shit.” This is the last update I’ll do to this post.
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When I was adding the big Vortex Hog Hunter scope to my M76 with RS Regulate side mount optics rail, all I had to prototype with were UTG rings. While the UTG rings aren’t too bad, I have stopped using them with centerfire rifles because they have a rounded screw that passes through the Picatinny rail rail slot. It’s rounded shape and only partially filling the slot risks damaging the rail and the zero shifting because the ring(s) can move.
These are the UTG low profile rings. Note how the screw is round and not rectangular? Also, after 30 rounds of 8mm Mauser firing, the rear flip lever rattled loose.
What is really needed is a quality ring or scope mount that uses a bar that properly fits into the Picatinny Rail slots and locks the optic securely and consistently into position. American Defense mounts are that way and they have an excellent locking lever.
I started using American Defense mounts for my Vortex Crossfire Red Dot optics a little over a year ago and was very satisfied with them and very impressed by their quick release lever design. So, when I needed a new mount for my M76 that was strong enough to hold the big Vortex Hog Hunter scope on my M76 and would clear rear sight block but also be close to the bore, the American Defense AD-RECON-SL immediately came to mind.
American Defense AD-RECON-SL
American Defense started with their QD Auto Lock System – the quick release lever system they developed. – and have branched into a variety of offerings from there including scope, bipod, light, laser and other mounts. In short, they are capitalizing on their really rugged QD levers.
So, the first thing I did was to measure the UTG mount from the top of the rail to the optic center, which I used the top of the lower half ring. That measure came to about 0.975″ and I knew any mount I bought had to be at least that or bigger. The front objective was all but touching the gas tube cover with those UTG low rings.
The AD Recon series has a variety of heights and offsets to select from and they publish specs for you to make an informed decision. In my case, because the RS!Regulate side mount already has front-to-back adjustment, I didn’t feel that I needed any offset but I did want to find as low of a scope mount as I could.
In looking at the specs, the AD-RECON-SL seemed to fit the bill. It had no offset and was their lowest mount with a 1.110″ center for scope with a 30mm tube. it was a tad higher but the slightly higher 0.135″ difference really didn’t worry me so I went ahead an ordered one.
Folks, the AD-RECON-SL did not disappoint. It is really a gorgeous piece of engineering. The fitment is excellent and is finished in a black hard coat. Here are some photos:
Here’s the side of the unit with the adjustment nuts. I love the flag on the side.Here it is with their patented QD levers. The small lever you see in the middle of the bigger lever is the locking mechanism that keeps the unit secure. The moment you flip those rings you know your dealing with quality.See how American Defense uses bars to lock the mount into the Picatinny rail? This is the way to go. It makes for a very secure and consistent engagement meaning your optic’s zero will not shift and the rail will not get damaged over time under heavy recoil with a simple round screw.Yeah… that’s the American Defense unit on the left and the little UTG ring on the right. I would have no hesitation recommending the UTG rings for a rimfire or light recoil applications but not for something where there is significant recoil and a heavy optic combined.Here’s another angle.
But Why Have QD Rings on a RS Regulate Mount?
I do need to explain this. I can bet that I will need to take the dust cover off for some reason and don’t want to rely on tools. If I am hunting, I may not have any tools with me and need to clear a jam or something. That means I need a way to remove the scope and rail to get access to the dust cover.
The RS Regulate’s lower rail does have a quick take down lever that solidly clamps on the M76 rail. That is not the issue and may make you wonder I need another quick release system. The challenge is that the Hog Hunter scope has a giant 56mm front objective for gathering as much light as possible in low-light situations such as dusk. It will hit the M76’s rear sight block if pulled straight back when mounted as low as I want. The solution is to use the AD-RECON-SL optic mount to enable me to lift the scope off the RS Regulate’s top rail and then I can slide the RS Regulate assembly off. The combination definitely works.
Installation
Taking the mount apart was easy – remove the four screws on each ring. I was pleasantly surprised that they used a precision pin to guide the rings into position and not just the screws. Again, this makes it stronger and more consistent.
Here’s a close up of the base. The middle hole is for the guide pin and the outer holes are for the screws.Here you can see the four halves of the rings. The half to the top left with the guide pin. Its counterpart is already installed in the back. An important design aspect to note is that the halves are not symmerical from top to bottom. The side with the pin is a no-brainer – that goes in the base. The other two halves without pins need to have the thinner section at the bottom for the pieces to mate up correctly. You can see in the top left half that the bottom part with the alignment pin is not as tall as the top. The lower-right is also a good angle for you to see the thinner bottom relative to the top.
There is an installation detail that you may not guess and they detail it in their installation instructions – you install the bottom screws first and tighten them down to the 20-25 in/lbs torque spec first. For folks not used to working with small fasteners, please note that is inch pounds and not foot pounds).
The bottom is torqued down first and then the top. There will be a small gap at the top. This method of bottom then top torquing centers the optic in their design. The only thread locker they will recommend is VC-3 Vibra-tite and the use of anything else will void the warranty. I’ve used a lot of Vibra-tite with Kydex holsters – it’s interesting in that you clean the fastener, apply the VC-3, let it dry and then assemble. It creates a rubbery surface that pretty much negates vibration. It also stays put when you unscrew and reinstall screws. It’s interesting stuff. They include a small packet of it with the mount but I also keep it around for working with Kydex fasteners and other situations where I expect there will be a need to uninstall and reinstall or adjust screws.
Here’s the M76 rifle with the American Defense mount installed. Note I used my Vortex torquing screwdriver to do the installation. It’s definitely a precision instrument and what I use for all optics work now. I take care to return it to zero after each use.Here it is from another angle. I changed cheek pieces to get a better cheek weld. This unit is nice and stable. I’m so-so about the cheek pad itself and wish it was a bit wider but it is better than the Voodoo cheek pad that was there. I’m still hunting for an even better cheek weld and have some options I want to try that I will report on at a later date after I have a chance to try them. To be clear- it is a solid cheek piece and the right height but personally I do not like the feel of that relatively narrow riser.
In Summary
The combination of the RS Regulate side mount system and the AD-RECON-SL optic mount is absolutely rock solid as in zero flex at all. even with the big and heavy Vortex Hog Hunter scope. I really think I have the ideal optic solution now for the rifle. The length of pull is better thanks to the installation of a SVL slip-on Limbsaver pad. I still need to find a better cheek piece to get my eye just the way I want it comfortably behind the scope and have some options to try. Last thing to report is that I did do some work on the firing pin but haven’t had time to test the rifle again.
If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.
Normally, I like the length of the Yugo M70 and M72 buttstocks. They’re shorter than many Western fixed stock designs but I’ve just grown accustomed to the length of pull (LOP). Recently, I had Two Rivers Arms build me a M76 designated marksman’s rifle (DMR) and found the stock to be a tad shorter than what I wanted to get in position behind the big Vortex Hog Hunter scope I had bought for it.
Two Rivers Arms custom built Yugo M76 rifle with a RS!Regulate scope mount and Vortex Hog Hunter scope. The UTG rings have been replaced with an American Defense mount and the cheek piece will be replaced but you can get an idea that this is a big rifle and a big optic.
I realized that to make the LOP longer, I had two options. My normal route with an AK is to install a stock adapter and either go to some form of modular stock. In the case of the M76, I really wanted to stick with the original wood. The brought be to my second option – to add a recoil pad.
There are a ton of recoil pads on the market but as far as I know, nobody makes a direct replacement recoil pad for the Yugo military rifles other than me and my pad is a copy of the original. This gives you two options also – either cut the stock and install a “grind to fit” pad that would ruin the original stock or to go with a slip on pad.
Slip on recoil pads are designed to fit a certain range of buttstock sizes based on the height and width. They may not be the best looking of options but they get the job done and don’t require any modifications to the underlying stock — plus for folks who don’t like messing with tools – they can be slid on and off usually very easily.
End of Buttstock Size for Yugo M70B1, M72B1, and M76 Rifles
They have a new Air-Tech series that adds 1″ to the LOP and is also remarkably spongy to absorb the recoil. The M76 really doesn’t have a ton of recoil so my decision was more based on the 1″ LOP.
The AirTech slip on pad comes in four sizes:
“Small” fits stocks measuring 4-1/2 x 1-1/2 inches to 4-13/16 x 1-5/8 inches
“Small/Medium” fits stocks measuring 4-5/8 x 1-9/16 inches to 5-1/8 x 1-3/4 inches
“Medium” fits stocks measuring 4-13/16 x 1-5/8 inches to 5-1/8″ x 1-3/4 inches
“Large” fits stocks measuring 5-1/8 x 1-3/4 inches to 5-3/8 x 1-7/8 inches
The small-sized pad slid right on and fits nice and snug.
I actually wish they had a pad that added about 1/2-3/4″ of pull as that would be perfect. The end result is just a tad longer than what I would dial in with an adjustable Magpul PRS stock but it definitely feels better when I start lining up behind the scope. It’s staying on the rifle!
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I had a fellow who was new to AK-47s/AKMs ask me the other day how the two pins work and if there was a published specification for them because his were floating in their holes. I learned a long time ago to try and help guys learn so I took a few photos and sent them to him.
Two Pins for Semi-Auto AKs
In a fully automatic AK, there are three pins and they are referred to collectively as the fire control group (FCG) pins – this includes the hammer pin, trigger pin, and sear pin – once in a while you’ll see the word “axis” thrown in there somewhere. For most civilians, we’ll just see semi-auto AKs so there are just two pins – one for the hammer and one for the trigger assembly which is made up of the trigger and disconnector. They are still called the FCG pins.
For anyone that is interested, a 1968 Soviet era armorer’s manual does have the pin specification:
This is from a Soviet era Armorer’s Guide that specs out the AKM fire control group pin. The shaft is 5mm and is where the trigger and hammer rotate. The same type of pin is used for both the trigger and the hammer – they are not unique.Here is a pile of pins from a mix of countries. I had them in one of my parts boxes. The diameters of the shafts vary from 4.921 to 4.988mm according to my micrometer. Based on the armorer diagram above, a diameter under 4.97 or over 5.03mm is out of spec. Three of those pins were under 4.97 interestingly enough.
Odds are that the heat treat is messed up on his receiver or someone drilled the holes out of spec. He has enough info now to decide his next steps and since I wrote most of this already, I decided to post it in case it helps someone else.
Accessing the 1968 AKM Armorer’s Manual
I am going to try hosting his huge armorer’s manual PDF file and see how it goes. If people have problems downloading it, I’ll just remove the link – click here for the 64MB PDF file. Note, I am not the owner or creator of that file. Someone did us a huge favor by taking the time to scan in all the pages and share it. It is in Russian and has a ton of diagrams.
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