Sooo, would you buy a .50 caliber AR15 ?


July 21, 2004, 10:00 PM

What will Chuck and Dianne do when this puppy gets popular?

The 12.7mm M-16

LW15.499 (Leitner-Wise Rifle Company) mini-.50 caliber (12.7mm) rifle is based on the M-16, but uses a shorter (than the standard .50 caliber) 12.7mm round. The mini-.50 rifles cost $1,450 to $2,250 each and weigh 6.3 pounds unloaded. The rifle is 36.2 inches long. Ammunition costs a 80 cents to five dollars a round (each one weighs about 1.1 ounces, with the most expensive ones being the armor piercing round). For a thousand bucks, you can get an upgrade kit for an AR-15 (the civilian version of the M-16). Fully loaded, with a ten round magazine, the weapon weighs about eight pounds.

While 6.8mm is the hot new rifle round being promoted for next-generation American assault rifles, two companies are quietly promoting a "mini-50" .50 caliber (12.7mm) round as a supplement to currently rifle calibers. The mini-.50 would be used by special forces and law enforcement officers against re-enforced structures, vehicles, and advanced body armor. The U.S. Coast Guard has already bought a quantity of these weapons for use against "Go-fast" boats and some have reportedly appeared in Afghanistan.

To create the mini-.50, a .50 caliber bullet is put into a smaller casing (than the standard .50 round used in machine gun and long-range sniper rifles). The smaller casing trades off less propellant for softer recoil, less accuracy over longer distances, but less stress on the barrel and user. The recoil for the mini-.50 is described as being similar to a 12-gauge shotgun. It also makes for a weapon that is easier to carry and faster to employ than the full-sized .50 caliber rifle designs. The Barrett Light .50 M82A1 rifle employed by the U.S. Army and Marines weighs in at 28 lbs unloaded and is 57 inches long while a mini-50 weighs in at around 8-12 lbs loaded and a little over 36 inches long.

Like various 6.8mm projects, gun designers built a hybrid rifle using AR-15/M-16 designs to provide some compatibility with existing hardware. For example, a 30 round M-16 magazine will hold 12 of the fat mini-50 rounds. Conversion kits are available, for around $1600.
each, to convert an M-16 type rifle into one firing the mini-.50.

Portability and round penetration of the mini-50 family are the key traits to this weapons family. Armored glass that resists 7.62mm fire, yields to the mini-.50, as do doors, locks, and cinder blocks, and engine blocks. Since the rifle is only slightly longer and heavier than a 5.56mm design, it can be used in close range combat and other rapid fire encounters. Two Virginia companies are currently making mini-.50s, the Leitner-Wise Rifle Company in Alexandria (a stone's throw away from the Pentagon) and Alexander Arms, on space leased from Radford Arsenal. – Doug Mohney

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El Tejon
July 21, 2004, 10:05 PM
Have been on shelves of gunstores here for some time now.

So far Iwannacoolgun is in remission. So far!:D

July 21, 2004, 10:15 PM
That's an expensive bullet... :eek:

July 21, 2004, 10:27 PM
So you keep the expensive bullet AND you lose the long range accuracy. Wow, that sounds like a great deal to pass up!


Fred Fuller
July 21, 2004, 10:50 PM
Ah- a Thumper!


4v50 Gary
July 21, 2004, 10:55 PM
I'm waiting for member Steyr-Aug to set up a Barrett Group buy. :)

July 21, 2004, 10:57 PM
Any comparisons to the rather desireable .50 Beowulf (

July 21, 2004, 11:08 PM
I already bought a .458 SOCOM AR15 and after getting it, realized that I have no earthly use for it. I remember shooting it once (one shooting session).

On a similar note, I saw that someone has out a .50 in a 1911. I think they named the caliber, the .50 GI

July 21, 2004, 11:45 PM

It's made by Guncrafter Industries and is called the Model 1. It is chambered for the .50 GI cartridge, which they designed.

It sure is a beauty.

July 22, 2004, 06:16 AM
I'll just get the .50 BMG upper.


July 22, 2004, 08:33 AM
MMMMMMMmmmmmmmmm....Beowulf :what:

Mongo wants Beowulf!

July 22, 2004, 09:15 AM
Already got one.

.50 Beowulf

Yes it's fun to shoot, and yes the ammo is expensive, that's why they make reloading dies.

July 22, 2004, 09:21 AM
I would also prefer a .50 beo.

July 22, 2004, 10:07 AM
As much as I loved the M-16 the Army issued me I hated the BM XM15E2S I owned. Consequently I can't imagine liking a .50 cal version of the same weapon.

So I'd have to say NO!

July 22, 2004, 10:48 AM
.50 beo uses standard .223 mags. Looks from the pics like this new baby doesn't.

July 22, 2004, 10:57 AM
I think the company, Alexander Arms (IIRC from the G&A "AR-15 Book"), makes their own mags, but you can use USGI mags as well. I have shot one and it is SWEET! The Ace stock eats up a lot of the recoil. The only downside is the drastic velocity drop, leadin to ridiculous hold-over at 2-300 meters. But for close in work, that bad boy will hurt. Hard to say if it replaces a shotgun with slugs, just a more ergonomic package, I guess, and a bit more accurate at distance.

Zak Smith
July 22, 2004, 11:42 AM
Think of it as a .45-70 in a M4 package. Then the applications start to become clear. This ain't a varmint round.


July 22, 2004, 12:53 PM
I would love one of these things. It would be great for whitetails here in WI.

July 22, 2004, 01:35 PM
A buddy of mine in the Army had a .50AE upper for his AR. I thought that was pretty cool...and gave him ammo commonality with his Desert Eagle in .50 AE.

July 22, 2004, 03:33 PM
I've had good thoughts about either a .50 Beowulf or .458 Socom upper for my AR.

Either would make for good Hog Hunting medicine... ;-)

Brian Williams
July 22, 2004, 04:42 PM

July 22, 2004, 07:12 PM
I'd rather have a M82 any day.

July 22, 2004, 08:47 PM
No way! Some people feel (wrongly) that the .223 is too powerful for an aluminum CAST receiver. My GOD! a forged aluminum receiver would blow to pieces if used with a 50 caliber! Stop this insanity before someone is killed!:scrutiny: :D

July 23, 2004, 08:46 AM

What did you not like about BM's XM15E2S when compared to your issue M16? They're practically identical (unless you're really into 3 round burst).

July 23, 2004, 06:20 PM
does anyone know how these two compare? i think the .50AE sounds more practical because of ammo avaliblity

July 24, 2004, 02:13 AM
I reckon a .50 AE from a rifle barrel would do anything I wanted a thumper to do...

July 24, 2004, 09:10 AM
A fella at the range I shoot at has a 50beo, very interesting gun and round. He was nice enough to give me one of his cases for my collection. Wouldn't mind having an Encore barrel in it, but not sure how the extractor would work on that recessed rim.

July 25, 2004, 01:28 AM
can anyone verify that the beowulf uses 7.62x39 bolt face. i remeber reading it somewhere..... it was either that or the 5.45 but i dont think they make a 5.45 bolt for the ar-15

July 25, 2004, 08:24 AM
So all I can do is hold them up against each other, but the 50 Beo and the 7.62X39 look the same.

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