AR-15 caliber list

[MeekAndMild]

How about an AR-15 caliber listing challenge?

I'm going to ask each person who reads the thread to add a post with one single factory caliber which is available for the AR-15 and the trade name of an AR or upper in that caliber.

Please don't repeat calibers that were already mentioned or list a bunch of calibers in your post.

It's OK to count military and civilian calibers as 2 different ones (but please only list one in your post) and its OK to include single shot factory uppers. But no wildcat uppers please unless you know a factory which makes them. For the oddball calibers weblinks would be appreciated.

I'll go first with my favorite:

6.5mm Grendel, rifles made by Alexander Arms.

 

[billythekid007]

450 thumper - Bushmaster

 

[Double Naught Spy]

Beowulf .50, Alexander Arms http://www.alexanderarms.com/beowulf.htm

 

[globemaster3]

6.8 Remington SPC - Model 1, + lots of others, etc.

 

[Dezynco]

Here's a couple from SSK industries?

300 Whisper
7mm TCU

Plus several others that are interesting.

 

[dieselmech]

is really wanna build one for 500 to 600 yrd fun

.308 win
dpms

 

[Arabia]

.308 win
dpms

.308 is an AR10 rifle. The OP wants AR-15 calibers.

.204 Ruger, JP enterprises, among others.

 

[armedtotheteeth]

uhmm..223/556 NATO.. From Colt. I wonder if anyone thought of that one.

 

[zippy13]

Duhh... .223 Remington

 

[Forwardassist]

Too many too list. There must be at least three dozen calibers available in the Ar15.

.22LR; Spike's tactical. Maybe a few others.

9mm; RRA, CMMG etc.

 

[Rant Casey]

458 socom
.50 bmg (bohica etc..)

 

[bigghoss]

5.45x39mm smith&wesson

 

[MeekAndMild]

.308 win dpms

OK, for this game we only give credit if you can find a manufacturer of single shot .308 uppers for the AR-15. As Arabia says, the semiauto platform for .308 is the AR-10. The AR-10 has a longer magazine well than the AR-15.

For my next round I'm going to mention .338 Lapua, which is found in a Bohica Arms single shot upper.

 

[ActivShootr]

DPMS makes a 6.5 Creedmoor.

 

[Arabia]

DPMS makes a 6.5 Creedmoor

6.5 Creedmoor, .300RUm, .243Win, .338Fed and the .260Rem DPMS uppers are for the AR10, not the AR15. They won't work on a AR-15 lower. We are discussing AR-15 caliber conversion uppers.

Here's another Ar-15 upper
7.62x39mm: DPMS

 

[VUPDblue]

.45 Acp

Olympic Arms

 

[Forwardassist]

.40S&W & 10mm. Olympic arms.

 

[armedtotheteeth]

there is a 50 BMG upper for the Ar15. I want 7 of them

 

[Mach II Sailor]

.499 LWR - LWRC, the biggest caliber and OAL cartridge for the unmodified lower !!

 

[cbm1948]

20 Practical, by Weaver Rifles

http://www.6mmbr.com/gunweek061.html

I want one when available this fall.

Clint