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View Full Version : Carbon15 pistol to .300 whisper


i8asquirrel
02-22-2011, 12:17 AM
I just got this Bushmaster Carbon 15 pistol in a trade. Have any of you converted one to .300 whisper? http://i1180.photobucket.com/albums/x413/i8asquirrel/AR15pistol2.jpg

Crawdaddy
02-22-2011, 11:46 AM
I haven't, but the thought has crossed my mind. If mine wasn't so darn accurate and fun to shoot as it is, I might...

With my single point sling, it pounds a 50 lb pig cutout at 100 yards off hand. Absolute blas

Maybe someday I'll get around to building another upper for it.

ds762
02-23-2011, 11:53 AM
it would be about the same as building any other AR into the 300 WTF platform. The advantage here is weight savings.

IF I were to do it .. I'd SBR the receiver and screw on a stock extension.

NitrousVa
02-25-2011, 07:06 PM
Is it gas piston operated? Could be very interesting.....

i8asquirrel
02-25-2011, 07:36 PM
No gas piston , Open port as an AR15... I know the pistol .300 whisper can be done. What I was after is if any of you have done it with a carbon 15 pistol and if there was any special considerations ....:smile:

mak91
02-26-2011, 12:34 PM
Some of the carbon fiber uppers use a proprietary barrel nut but other than that I think the rest is interchangeable. I've got a 7inch upper (not on a carbon fiber upper) with the gas port moved back 1.5 inches from pistol position. It will run subsonic loads down to 110 grn bullets no problem. I have two carbon fiber uppers and lowers running other things. One thing I have noticed on the carbon fiber uppers is that they do flex more than other uppers. You can really see this when tightening up the barrel nut.

i8asquirrel
02-26-2011, 05:31 PM
Thanks for the info! I dropped it off at my gunsmith this AM....:smile:

i8asquirrel
03-09-2011, 12:46 AM
Well after taking a hard look at it . We are dont going to convert this one. (just not worth the trouble) We're gonna build a standard reciever into a pistol instead.