Colt AR6520 16″ lightweight barrel. This barrel was removed from a early 2000s era production AR-15 A2 Govt Carbine. Barrel is about 90% condition. No bent barrel nut teeth. Front sight pins have never been pushed out. Includes factory installed flash hider, front sight, and barrel nut. 1/7 twist with M4 feedramps. Fully chrome lined. June 2000 barrel date. Only one available.