M4 Carbine Sand Test with FailZero AR-15 Bolt Carrier Group and Hammer Upgrade Kit

DefenseReview.com (www.defensereview.com) contributor Chen Lee aka "SMGLee" demonstrates the FailZero "AR-15 Basic Kit" in a desert environment. The demonstration weapon is comprised of a Colt LE 6940 16" 5.56mm NATO Rem. AR-15 carbine upper receiver mated to a full-auto registered full-auto lower receiver. In the video, Lee fires two magazines (2x28 rounds) through the weapon on both semi-auto and full-auto (burst fire) with absolutely no lubrication. After he empties the first magazine he ...
Tags: FailZero AR-15 Upgrade Kit bolt carrier group upgrade kit bcg upgrade kit nickel-boron coating ni-b coating self-lubricating coating self-lubricitous coating Colt LE6940 monolithic carbine Colt 6940 carbine m4 carbine m4a1 carbine


















