^ Thanks.
From a ballistic standpoint, it makes more sense to SBR a 7.62x39 than it does 5.56. You lose much less velocity with the 7.62 x 39. This one gets an average of 2120 fps out of a 12 inch barrel, and the ammo is dirt cheap...Take that .300 whisper!![]()
altough the shorter piston ones would be even better