Is anyone making ARs in this caliber? thanks

Not that I know of. The .25WSSM is available in the AR15, and it has higher pressure, so I suppose it is possible.

Contact SSK and see if they will build you one.

George

http://www.oa2.org/forums/viewtopic.php?t=6883


How many AR15 calibers exist?
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melensdad
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PostPosted: Sat Sep 08, 2007 6:41 pm Post subject: How many AR15 calibers exist? Reply with quote
Here is what I can find . . .

AR-15, without bolt modification
.17 Remington
.20 Tactical
.204 Ruger
.221 Fireball
.222 Remington
.222 Remington Magnum
.223 Remington (5.56x45mm)
.223 Remington Ackley Improved
6x45mm
6mm Whisper
6.5mm Whisper
7mm Whisper
7mm TCU
.300 Whisper (.300/221, .300 Fireball)
.338 Whisper

AR-15, with bolt modification
223 WSSM
5.45x39mm (.21 Genghis)
243 WSSM
6mm PPC
6mm BR Remington
6.5mm PPC
6.5mm Grendel
25 WSSM
6.8x43mm SPC
.30 Herrett Rimless Tactical (6.8x43mm case trimmed to 41mm and necked up to .308; the 6.8mm version of the .300 Whisper)
7.62x39mm
.30 RAR
300 OSM Very Happy
.357 Auto
.35 Gremlin (necked up 6.5 Grendel to 358)
.358 WSSM (various names, but all are some form of a WSSM necked up to 35 caliber, some are shortened to make them big game legal in Indiana)
.458 SOCOM
.50 Action Express
.50 Beowulf

AR-15 using a simple blowback operation
.17 HMR
.22 LR
.22 WMR
9x19mm
40S&W
10mm Auto
45ACP


I'm sure I missed a bunch of others, what can you add to the list?


EDIT - I moved the family of WSSM to the modified bolt category. I also moved the 40S&W, 10mm Auto and 45ACP to the BLOWBACK action category.

NEW EDIT - Added the 300 Olympic Short Magnum to the list!
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Last edited by melensdad on Sat Aug 01, 2009 2:35 am; edited 2 times in total

A gentleman named Lloyd DeSantis owns RND Manufacturing (http://www.rndrifles.com)

He makes AR style platforms for everything from .223 (RND 400) to .50 BMG (RMD 3000). The .280 isn't listed on his site but give him a call and I bet he can make anything you want.

Everything he makes is excellent…………but bring your wallet.

The 284 case is longer than the 308 family of cases so they won't fit in the AR10 length magazines.

Yeah I've been researching this more thoroughly and it will have to be a custom job top to bottom. I think its a great cartridge. I have the 450 bushmaster and the 30 RAR and both are excellent, I'm really impressed by the 30 RAR's results in the field.