Available for civilian purchase. Popular configuration with the original birdcage flash hider, collapsing stock, M4 16 inch barrel, M4 handguard and bayonet lug. Includes the A3 carrying handle, 1 in 9 twist, chrome lined 16 inch barrel with birdcage flash-hider. M4 configuration with bayonet lug, M203 launcher capable. Collapsing stock, and hard plastic case.