This is a used Colt CR6920 carbine chambered in 5.56 NATO. It features a 16-inch barrel with a 1/7 twist, muzzle brake, 30-round magazine, Magpul MBUS rear sight, A2 front sight post, and Magpul furniture. Overall, this carbine is in good condition with normal wear on the receiver and handling wear on the barrel. Bore condition is good with crisp rifling. Buy online today!