Primary Weapons Systems Mk1 Mod 2, Carbine, Semi-automatic, 223 Rem/556nato, 16.1" Stainless Steel,isonite Treated, Button Rifed, 1:8 Twist Barrel, Black Magpul Moe Stock, Magpul Backup Flip Sight, 30rd, Enhanced Charging Handle, Pws Bolt Carrier Group, M | iAmmo