happygeek
November 8, 2010, 12:01 AM
If so what's your experience with it? A review was surprisingly hard to find, Google just turns up a bunch of people writing and making youtube videos about CMMG's conversion bolt for 5.56 uppers.
I'm pretty happy with mine. I got the one they make with the low profile front sight block (http://cmmginc.secure-mall.com/item/Sierra-.22-LR-Upper-Receiver-w-Low-Profile-Railed-GB-1514) and went for the stainless bolt for an extra $30 or so. They're selling the mags for it for $20 each currently. I put a Burris 2-7x scope and one of those quick detach bipods they sell for $30 or less on Amazon on the thing and it's at least as accurate as I am inside of 100 yards. So far the best I've gotten was a 5 shot group that fit inside a quarter (as in 25 cents, not a 1/4 inch) at 50 yards and it'll routinely shoot jagged hole 5 shot groups at 25 meters.
It has not been 100% reliable, probably more like 98 - 99%. So far the only time it's had issues was chambering the first round from a mag, sometimes that first round will act like it doesn't want to fit in the chamber. The other 24 rounds in the mag will run fine though :confused:
Apparently CMMG just started selling a 20 inch barrel M16A2 style 22LR upper. Is there much of a difference in range/accuracy between 16 and 20 inch barrels for 22LR?
I'm pretty happy with mine. I got the one they make with the low profile front sight block (http://cmmginc.secure-mall.com/item/Sierra-.22-LR-Upper-Receiver-w-Low-Profile-Railed-GB-1514) and went for the stainless bolt for an extra $30 or so. They're selling the mags for it for $20 each currently. I put a Burris 2-7x scope and one of those quick detach bipods they sell for $30 or less on Amazon on the thing and it's at least as accurate as I am inside of 100 yards. So far the best I've gotten was a 5 shot group that fit inside a quarter (as in 25 cents, not a 1/4 inch) at 50 yards and it'll routinely shoot jagged hole 5 shot groups at 25 meters.
It has not been 100% reliable, probably more like 98 - 99%. So far the only time it's had issues was chambering the first round from a mag, sometimes that first round will act like it doesn't want to fit in the chamber. The other 24 rounds in the mag will run fine though :confused:
Apparently CMMG just started selling a 20 inch barrel M16A2 style 22LR upper. Is there much of a difference in range/accuracy between 16 and 20 inch barrels for 22LR?
