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Old September 20, 2008, 10:08 PM   #1
MeekAndMild
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AR-15 caliber list

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.
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Old September 20, 2008, 10:48 PM   #2
billythekid007
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450 thumper - Bushmaster
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Old September 21, 2008, 05:08 AM   #3
Double Naught Spy
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Beowulf .50, Alexander Arms http://www.alexanderarms.com/beowulf.htm
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Old September 21, 2008, 08:07 AM   #4
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6.8 Remington SPC - Model 1, + lots of others, etc.
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Old September 21, 2008, 09:40 AM   #5
Dezynco
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Here's a couple from SSK industries?

300 Whisper
7mm TCU

Plus several others that are interesting.
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Old September 21, 2008, 11:44 AM   #6
dieselmech
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is really wanna build one for 500 to 600 yrd fun

.308 win
dpms
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Old September 21, 2008, 11:51 AM   #7
Arabia
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Quote:
.308 win
dpms
.308 is an AR10 rifle. The OP wants AR-15 calibers.

.204 Ruger, JP enterprises, among others.
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Old September 21, 2008, 12:06 PM   #8
armedtotheteeth
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uhmm..223/556 NATO.. From Colt. I wonder if anyone thought of that one.
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Old September 21, 2008, 01:41 PM   #9
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Duhh... .223 Remington
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Old September 21, 2008, 07:35 PM   #10
Forwardassist
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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.
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Old September 21, 2008, 07:44 PM   #11
Rant Casey
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458 socom
.50 bmg (bohica etc..)
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Old September 21, 2008, 08:16 PM   #12
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5.45x39mm smith&wesson
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Old September 21, 2008, 10:19 PM   #13
MeekAndMild
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Quote:
.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.
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Old September 22, 2008, 08:19 AM   #14
ActivShootr
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DPMS makes a 6.5 Creedmoor.
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Old September 22, 2008, 10:56 AM   #15
Arabia
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Quote:
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
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Old September 22, 2008, 11:07 AM   #16
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.45 Acp

Olympic Arms
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Old September 22, 2008, 09:12 PM   #17
Forwardassist
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.40S&W & 10mm. Olympic arms.
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Old September 22, 2008, 11:22 PM   #18
armedtotheteeth
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there is a 50 BMG upper for the Ar15. I want 7 of them
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Old September 23, 2008, 08:06 AM   #19
Mach II Sailor
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.499 LWR - LWRC, the biggest caliber and OAL cartridge for the unmodified lower !!

Last edited by Mach II Sailor; September 23, 2008 at 08:10 AM. Reason: speiling
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Old September 23, 2008, 01:25 PM   #20
cbm1948
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20 Practical, by Weaver Rifles

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

I want one when available this fall.

Clint
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Old September 27, 2008, 12:25 AM   #21
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beowulf
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Old September 27, 2008, 12:31 AM   #22
Frankyoz
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dont forget .22lr lol
Damn just saw someone already said this hmmm I dunno looks like most have been covered.
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Old September 27, 2008, 01:08 AM   #23
shaman
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what about the wssm calibers? is that still an ar 15 standard lower?

sorry, i dont know beans about those wssm rounds, i just remember seeing someone makes an ar in the 243wssm. i cant for the life of me remember where i saw it though...
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Old September 27, 2008, 10:11 AM   #24
MeekAndMild
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So far so good. I don't vouch for the accuracy of this list but this is what I counted so far, though some of the entries are difficult to find on the internet. Who has links? We can only count the .308 series and WSSM calibers if you can name a manufacturer. Sorry.

.20 Practical - Weaver Rifles
22LR - Spikes Tactical
5.45x39 - Smith and Wesson
.223 - Remington- DPMS (one maker added by me as common knowledge- there are probably 50 other makers)
5.56mm NATO - Colt
6.5mm Grendel - Alexander Arms
6.8 Remington SPC - Model 1 (Is this the maker or seller?)
7mm TCU - SSK Industries
.300 Whisper - SSK Industries
.338 Lapua - Bohica Arms
.40 S&W - Olympic Arms
10mm - Olympic Arms
.45 ACP - Olympic Arms
.450 "Thumper" (Is that a proper name?') - Bushmaster
.458 Socom (Made by who? Socom?)
.499 LWR - LWRC
.50 Beowulf - Alexander Arms
.50 BMG - Bohica Arms
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Old September 27, 2008, 10:47 AM   #25
shaman
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found the wssm rifle. its olympic arms.

http://www.olyarms.com/index.php?pag...mart&Itemid=37
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