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 How many different calibers is the AR15 platform available in?
R_Fury  [Team Member]
6/30/2010 8:53:39 PM EST
I figured that this is the place to ask....

I am at work having a debate with a buddy here at work, he is telling me that the AR15 (at one point in time) was available in the 30-06 cartridge. So we are sitting here trying to list the different calibers that the AR platform is available in.

Please give us a hand.

Fury.
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drfcolt  [Team Member]
7/1/2010 3:52:26 AM EST
http://www.ar15.com/forums/board.html?b=3
TaylorWSO  [Life Member]
7/1/2010 10:31:20 AM EST
Originally Posted By R_Fury:
I figured that this is the place to ask....

I am at work having a debate with a buddy here at work, he is telling me that the AR15 (at one point in time) was available in the 30-06 cartridge. So we are sitting here trying to list the different calibers that the AR platform is available in.

Please give us a hand.

Fury.


how can a 30-06 fit in a ar15 magwell?

there might be a single load upper for one but a functioning semi-nope
drfcolt  [Team Member]
7/1/2010 12:02:31 PM EST
Originally Posted By TaylorWSO:
Originally Posted By R_Fury:
I figured that this is the place to ask....

I am at work having a debate with a buddy here at work, he is telling me that the AR15 (at one point in time) was available in the 30-06 cartridge. So we are sitting here trying to list the different calibers that the AR platform is available in.

Please give us a hand.

Fury.


how can a 30-06 fit in a ar15 magwell?

there might be a single load upper for one but a functioning semi-nope


He may be thinking of the BRP MG-34 conversion for the AR15.

Available in 8MM and 308.

http://www.brpguns.com/categories/Firearms/XMG-Belt%252dFed-AR%252d15%7B47%7DM16-Upper-Receiver/
dusten  [Team Member]
7/1/2010 4:35:41 PM EST
The only "AR" type rifle I have ever seen in 30-06 was the Cobb MCR, but even that was based off the AR-10 platform.



ETA: From another thread-
Originally Posted By MartytW:
Someone sent me a note, inviting me to the party...

For the .223 bolt -
.223
6 x 45 - factory ammo, no mag issues
All the TCU variants - often too long to fit the mag, no known factory ammo
.222
19-223 Calhoon
17 Remington - factory ammo
20 Tactical
.204 Ruger - factory ammo
Any of Kurt's variants (the x40 ranging from 6.5 to 30 cal)
.300 Whisper - factory ammo, but mag can be an issue (binding on front rib)
25 Bailey
30 Coyote
338 Whisper
338-223 Straight (Atchisson waaaay back when)
17 Mach IV
6.5 MPC



The following DO NOT fit Mil-Spec .223 bolts
5.45 x 39
9mm DI (it takes a slightly larger bolt)
7.62x25 DI (like 9mm requires a larger bolt face)
40 S&W
10mm
.338 Spectre
6.8 SPC and its derivatives

.499 LW - now defunct, uses a 7.62x39 bolt
.50 Beowulf - uses a custom bolt with 7.62x39 size opening but deeper bolt face (AA specific)
6.5 Grendel - 7.62x39 bolt, for AA chambers the deeper bolt face
.502 Thunder Sabre - now defunct, .50AE case with 7.62x39 rim, or .50 Beo "short"

On a custom AR15 bolt opened to .308 rim size
.450 Bushmaster
.45 ACP (DI)
.458 SOCOM
.44 AMP (Auto Mag)
.357 AMP
.45 Win Mag
.475 Wildey Mag
.40 Super
7 BR at low pressure
wildcats based on the aforementioned
.50 GI

On the .308 bolt (7.62x51)
.308 Win
.338 Federal
.358 Win
.284 Win
7 - 08
260 Rem
6.5 Creedmore
.243 Win
.22-250 (AI version will work better in mags) and variants thereof
.458 SOCOM - it will work, mags are a challenge...
.44 AMP - requires spacer in the magazine
BR based rounds including 7BR and the .338 Whisper
6.5 x 47 Lapua
The 6mm variants used in BR shooting (Dasher, X, etc)
6.5-284 - USMC tested this combination, shoots great, eats barrels...
22 Cheetah

The Whelen and Mauser chamberings mentioned above are too long to fit the .308 magazines, if we remove that restriction, it opens up a HUGE set of cartridges


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