THE BEST SIDE OF M4 CARBINE OEM1

For focus on acquisition, the rifle is supplied by having an A2 entrance sight and also a Magpul MBUS rear sight, making sure brief and exact sight alignment.I really later did that to another OEM two. Gas block pins came out real effortless, fuel port measured .0615. Enjoy the little spacer colt works by using in between gasoline block and shoulde