How to Convert an Aluminum AR-15 5.56/223 Magazine For .50 Beowulf Rounds

When Bill Alexander decided to make the .50 Beowulf round, he really got me excited 🙂  The idea of a heavy thumper round in an AR platform really appealed to me so I bought one and one issue that popped up was where to find magazines that were not really expensive.

Once in a while the answer is really straight forward and this is one of those times.  You do not need to change the feed lips or the follower on a standard 5.56/.223 magazine, you just need to bevel the front lip at about 45 degrees (the exact angle doesn’t seem to be a big deal) so the giant .50 Beowulf bullet goes up and, this is the key part, the leading lip of the brass case hits the little ramp and goes up it vs. hanging. In this next photo – see how the lip of the case will catch?  It may catch sometimes or all the time – for me it was practically all the time.

All I did was use a medium grit little sanding drum in my Dremel to bevel the magazine’s front lip – you are basically making an ad hoc feed ramp so the case doesn’t catch.  The round you see has the big 350 grain XTP bullet – they hit like a freight train.

This is a really quick operation and you don’t need to take a ton off.  I do it with the magazine empty of course, insert a round into the magazine and test then do a bit more.  I’d repeat the removal and testing until the round went right up into the chamber.  After the first few magazines, I had it down pat.

In this next photo, see the shiny little ramp?

That’s all there is to it.  I just used quality aluminum magazines and did the tweaking.  Polymer mags, such as MagPul take more work and I simply didn’t feel like bothering with them.  I did use quality magazines and avoided cheap stuff and I also used the anti-tilt followers – just regular 5.56 followers – nothing special.

In a standard 20 round aluminum 5.56/.223 magazine, you can fit up to seven Beowulf rounds.  In a 30 round magazines, you can fit up to 10.  I never tried any of the higher capacity magazines so I can’t speak to them at all.

This approach worked great for me and I hope it helps you as well.


If you find this post useful, please either buy something using one of the links to eBay and Amazon.  With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated.  Doing something like the above will help us fund continued development of the blog.


49/64x20 TPI Mid Size 4" Competition Muzzle Brake, For .50 Beowulf,With Jam Nut

$45.99
End Date: Sunday Nov-18-2018 10:13:13 PST
Buy It Now for only: $45.99
Buy It Now | Add to watch list

.50 Beowulf 49/64x20 TPI Heavy Duty 5" Competition Muzzle Brake,With Jam Nut

$46.99
End Date: Sunday Nov-18-2018 10:04:08 PST
Buy It Now for only: $46.99
Buy It Now | Add to watch list

A-Zoom Rifle Metal Snap Caps .50 Beowulf, Package of 2

$29.72
End Date: Monday Nov-5-2018 0:41:57 PST
Buy It Now for only: $29.72
Buy It Now | Add to watch list

49/64x20 TPI Tanker Muzzle Brake Compensator, .50 Beowulf With 49/64x20 Jam Nut

$34.45
End Date: Saturday Nov-3-2018 12:58:36 PDT
Buy It Now for only: $34.45
Buy It Now | Add to watch list

49/64x20 TPI Tanker Muzzle Brake Compensator, .50 Beowulf With 49/64x20 Jam Nut

$34.85
End Date: Friday Nov-2-2018 9:46:22 PDT
Buy It Now for only: $34.85
Buy It Now | Add to watch list

Otis Alexander Arms .50 Cal. Beowulf

$27.49
End Date: Friday Nov-2-2018 8:56:13 PDT
Buy It Now for only: $27.49
Buy It Now | Add to watch list

49/64x20 TPI Mid Size Competition Muzzle Brake, For .50 Beowulf,With Jam Nut

$45.99
End Date: Friday Oct-26-2018 10:59:54 PDT
Buy It Now for only: $45.99
Buy It Now | Add to watch list

New .50 Beowulf 49/64x20 TPI Heavy Duty Competition Muzzle Brake With Jam Nut

$46.95
End Date: Friday Oct-26-2018 10:38:27 PDT
Buy It Now for only: $46.95
Buy It Now | Add to watch list

Aluminum Anodized Red .50 50 Beowulf Laser Bore Sight Boresighter 50BEOWULF

$19.80
End Date: Thursday Oct-25-2018 13:39:45 PDT
Buy It Now for only: $19.80
Buy It Now | Add to watch list

for .50 BEOWULF, Xterminator Stainless Muzzle Brake by X-Caliber in 49/64x20 TPI

$93.95
End Date: Monday Nov-19-2018 20:41:05 PST
Buy It Now for only: $93.95
Buy It Now | Add to watch list

Stainless Steel 49/64x20 Tanker Muzzle Brake, .50 Beowulf, 49/64x20 TPI Jam Nut

$34.99
End Date: Saturday Nov-10-2018 11:54:13 PST
Buy It Now for only: $34.99
Buy It Now | Add to watch list

Lee 4-Die Rifle Set .50 Beowulf

$51.74
End Date: Tuesday Nov-6-2018 1:10:38 PST
Buy It Now for only: $51.74
Buy It Now | Add to watch list

US 49/64x20 TPI Thread Protector For .50 Beowulf Muzzle Thread knurlled Surface

$12.49
End Date: Tuesday Oct-30-2018 9:49:30 PDT
Buy It Now for only: $12.49
Buy It Now | Add to watch list

ALEXANDER ARMS MAGAZINE .50 BEOWULF 10 ROUNDS STEEL

$40.99
End Date: Wednesday Oct-24-2018 23:04:45 PDT
Buy It Now for only: $40.99
Buy It Now | Add to watch list

ALEXANDER ARMS MAGAZINE .50 BEOWULF 7 ROUNDS STEEL

$40.99
End Date: Wednesday Oct-24-2018 23:05:01 PDT
Buy It Now for only: $40.99
Buy It Now | Add to watch list

ALEXANDER ARMS MAGAZINE .50 BEOWULF 4 ROUNDS STEEL

$40.99
End Date: Wednesday Oct-24-2018 23:04:52 PDT
Buy It Now for only: $40.99
Buy It Now | Add to watch list

49/64x20 TPI Thread Protector For .50 Beowulf Muzzle Thread knurlled Surface

$12.49
End Date: Monday Nov-19-2018 12:11:02 PST
Buy It Now for only: $12.49
Buy It Now | Add to watch list

fits .50 BEOWULF , 49/64x20 Stainless Steel Tanker Style Brake, w/ free Jam Nut

$49.99
End Date: Sunday Nov-18-2018 21:02:20 PST
Buy It Now for only: $49.99
Buy It Now | Add to watch list

Stainless Steel 49/64x20 Tanker Muzzle Brake, .50 Beowulf,49/64x20 SS Jam Nut

$39.85
End Date: Wednesday Nov-14-2018 10:12:19 PST
Buy It Now for only: $39.85
Buy It Now | Add to watch list

for .50 Beowulf , 49/64x20 TPI Thread Competition Muzzle Brake with free jam nut

$46.50
End Date: Sunday Nov-4-2018 7:20:21 PST
Buy It Now for only: $46.50
Buy It Now | Add to watch list

for .50 BEOWULF , 49/64x20 TPI Tanker Style Muzzle Brake, with free crush washer

$42.55
End Date: Sunday Nov-4-2018 7:16:29 PST
Buy It Now for only: $42.55
Buy It Now | Add to watch list

for .50 BEOWULF 49/64x20 TPI Stainless Muzzle Brake 50 cal, w/ free crush washer

$98.95
End Date: Wednesday Nov-21-2018 10:55:11 PST
Buy It Now for only: $98.95
Buy It Now | Add to watch list

A-Zoom Rifle Metal Snap Caps .50 Beowulf Package of 2 12302

$15.10
End Date: Tuesday Nov-20-2018 19:55:06 PST
Buy It Now for only: $15.10
Buy It Now | Add to watch list

fits .50 Beowulf, 49/64x20 TPI Thread Competition Muzzle Brake free crush washer

$46.99
End Date: Friday Nov-16-2018 20:20:44 PST
Buy It Now for only: $46.99
Buy It Now | Add to watch list

for .50 BEOWULF, 49/64x20 TPI Tanker Style Muzzle Brake w/ free 49/64x20 Jam Nut

$44.95
End Date: Friday Nov-16-2018 20:08:48 PST
Buy It Now for only: $44.95
Buy It Now | Add to watch list

TIMBER CREEK 3/4"-24 THREAD .50 BEOWULF TANKER MUZZLE BRAKE - CERAKOTE CLEAR

$55.99
End Date: Monday Nov-12-2018 2:52:01 PST
Buy It Now for only: $55.99
Buy It Now | Add to watch list

TIMBER CREEK 49/64-20 .50 BEOWULF TANKER MUZZLE BRAKE - CERAKOTE CLEAR - SILVER

$55.99
End Date: Saturday Oct-27-2018 4:50:45 PDT
Buy It Now for only: $55.99
Buy It Now | Add to watch list

.50 Beowulf Pepper Pot Threaded Muzzle Brake

$139.16
End Date: Wednesday Nov-14-2018 11:25:28 PST
Buy It Now for only: $139.16
Buy It Now | Add to watch list

.50 Beowulf | No Timing Required | Muzzle Brake 3/4x24 | CUSTOMIZE IT

$84.00
End Date: Tuesday Nov-13-2018 12:31:24 PST
Buy It Now for only: $84.00
Buy It Now | Add to watch list

.50 Beowulf High Performance Muzzle Brake 3/4-24 | CUSTOMIZE IT!

$84.00
End Date: Tuesday Nov-13-2018 12:21:18 PST
Buy It Now for only: $84.00
Buy It Now | Add to watch list

50 Beowulf Tanker Muzzle Brake .50 Beowulf 49/64x20 TPI Tactical

$65.00
End Date: Sunday Nov-11-2018 7:08:38 PST
Buy It Now for only: $65.00
Buy It Now | Add to watch list

Tactical Competition Muzzle Brake .50 Beowulf 49/64x20 TPI

$40.00
End Date: Sunday Nov-11-2018 7:07:11 PST
Buy It Now for only: $40.00
Buy It Now | Add to watch list

Aluminum Anodized Red .50 50 Beowulf Laser Bore Sight Boresighter 50BEOWULF

$19.99
End Date: Wednesday Nov-21-2018 13:03:07 PST
Buy It Now for only: $19.99
Buy It Now | Add to watch list

AR .50 Beowulf Magwell ID Decal - Magwell Lower Decal Sticker 7.62×39mm

$3.89
End Date: Monday Nov-12-2018 5:34:08 PST
Buy It Now for only: $3.89
Buy It Now | Add to watch list

AR .50 Beowulf Magwell ID Decal - Magwell Lower Decal Sticker 7.62×39mm

$3.99
End Date: Monday Nov-12-2018 5:34:08 PST
Buy It Now for only: $3.99
Buy It Now | Add to watch list

AR .50 Beowulf Magwell ID Decal - Magwell Lower Decal Sticker 7.62×39mm

$3.99
End Date: Monday Nov-12-2018 5:34:08 PST
Buy It Now for only: $3.99
Buy It Now | Add to watch list

AR .50 Beowulf Magwell ID Decal - Magwell Lower Decal Sticker 7.62×39mm

$3.99
End Date: Monday Nov-12-2018 5:34:08 PST
Buy It Now for only: $3.99
Buy It Now | Add to watch list

AR .50 Beowulf Magwell ID Decal - Magwell Lower Decal Sticker 7.62×39mm

$3.89
End Date: Monday Nov-12-2018 5:34:08 PST
Buy It Now for only: $3.89
Buy It Now | Add to watch list

AR .50 Beowulf Magwell ID Decal - Magwell Lower Decal Sticker 7.62×39mm

$3.99
End Date: Monday Nov-12-2018 5:34:08 PST
Buy It Now for only: $3.99
Buy It Now | Add to watch list

AR .50 Beowulf Magwell ID Decal - Magwell Lower Decal Sticker 7.62×39mm

$3.99
End Date: Monday Nov-12-2018 5:34:08 PST
Buy It Now for only: $3.99
Buy It Now | Add to watch list

Nobody Needs An AR15? Funny T Shirt Gun Shirt Gun Rights Shirt Political Gun Tee

$9.95
End Date: Sunday Nov-4-2018 10:48:51 PST
Buy It Now for only: $9.95
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Grim Reaper Military AR15 Men's Shirt American Flag Skull Army S-3XL

$13.99
End Date: Wednesday Nov-7-2018 16:41:42 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

American Flag T-Shirt 2nd Amendment Gun Rights Homeland AR15 Tee

$6.86
End Date: Monday Oct-29-2018 9:57:25 PDT
Buy It Now for only: $6.86
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$18.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $18.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$13.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$13.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$16.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $16.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$13.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$13.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $13.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$16.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $16.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$16.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $16.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$18.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $18.99
Buy It Now | Add to watch list

AR15 American Flag M4 T-Shirt Men's Military Army Rifle Gun S-3XL

$16.99
End Date: Sunday Nov-18-2018 9:49:38 PST
Buy It Now for only: $16.99
Buy It Now | Add to watch list

NEW Wheeler Fine Gunsmith Equipment Armorer's Ultra Professional Gun Tool Kit

$83.00
End Date: Wednesday Nov-21-2018 5:34:37 PST
Buy It Now for only: $83.00
Buy It Now | Add to watch list

Vintage Gun Parts, Gunsmith Screws

$11.50 (3 Bids)
End Date: Sunday Oct-28-2018 19:21:29 PDT
Bid now | Add to watch list

Vintage Gun Parts, Gunsmith Screws

$9.95 (2 Bids)
End Date: Sunday Oct-28-2018 19:14:03 PDT
Bid now | Add to watch list

Universal Firearm Durable Bench Block Gunsmith Handgun Gunsmithing Tools Pistols

$17.08
End Date: Tuesday Nov-20-2018 12:16:10 PST
Buy It Now for only: $17.08
Buy It Now | Add to watch list

Gunsmith 1911 Disconnector Staking Tool

$10.00 (0 Bids)
End Date: Sunday Oct-28-2018 19:00:24 PDT
Bid now | Add to watch list

Brownells Gunsmith Pin Alignment Set 3 Pieces Pro Gunsmith Tool

$10.00 (1 Bid)
End Date: Sunday Oct-28-2018 13:00:26 PDT
Bid now | Add to watch list

M1 Garand Muzzle and Throat Erosion Gauge Gunsmith Tool

$20.00 (1 Bid)
End Date: Friday Oct-26-2018 13:59:50 PDT
Bid now | Add to watch list

Marvel 1911 Slide Lapping Professional Gunsmith Tool Custom Fitting

$15.00 (0 Bids)
End Date: Friday Oct-26-2018 13:27:00 PDT
Bid now | Add to watch list

GUNSMITH TOOL SLUG BARREL KIT #5

$23.00 (0 Bids)
End Date: Tuesday Oct-23-2018 13:30:21 PDT
Bid now | Add to watch list

Vintage Numberall M3689 Numbering Machine Gunsmith

$10.49 (2 Bids)
End Date: Tuesday Oct-23-2018 18:01:49 PDT
Bid now | Add to watch list

J&E .223/5.56 Upper and Lower Receiver Vise Block Combo Gunsmith Tool Kit Combo

$13.45
End Date: Wednesday Nov-14-2018 16:51:19 PST
Buy It Now for only: $13.45
Buy It Now | Add to watch list

Reaction Rod Alternative Upper Tool Gunsmith Black Red Blue Gold Silver US Stock

$59.99
End Date: Saturday Nov-10-2018 15:20:04 PST
Buy It Now for only: $59.99
Buy It Now | Add to watch list

Winchester 51 Peice Professional Gunsmith Tools Set Wheeler Gun kits

$18.99
End Date: Tuesday Nov-6-2018 13:51:07 PST
Buy It Now for only: $18.99
Buy It Now | Add to watch list

Wheeler Fine Gunsmith Tools SAE/Metric/Hex/Torx P-Handle Driver Set: 1081957

$57.95
End Date: Tuesday Nov-6-2018 11:49:44 PST
Buy It Now for only: $57.95
Buy It Now | Add to watch list

Strauss Habilis File 2608HB for 1911 Gunsmith Specialist

$29.99
End Date: Monday Nov-5-2018 3:00:08 PST
Buy It Now for only: $29.99
Buy It Now | Add to watch list

1911 GUNSMITH VALLORBE SWISS FILES - 8" - #2 CUT SET OF 3

$42.99
End Date: Sunday Nov-4-2018 14:31:55 PST
Buy It Now for only: $42.99
Buy It Now | Add to watch list

Lyman 68 Piece Master Gunsmith Tool Kit

$49.99
End Date: Friday Nov-2-2018 11:25:21 PDT
Buy It Now for only: $49.99
Buy It Now | Add to watch list

 


See larger image

Additional Images:Img - 0982391854

AK-47: The Grim Reaper (Hardcover)

It’s back…but this time with more pages, more information and more photographs. The most definitive study on Kalashnikov pattern rifles to date boasts over 1,100 printed pages covering the AK rifle, as well as its variants manufactured in over 19 countries.

By (author):  Frank Iannamico

List Price: $69.95 USD
New From: $69.95 USD In Stock
buy now

(Visited 60 times, 1 visits today)

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.