Colt AR-15A2 Gov't AR6520 Carbine, 20 Rounds, .223 Remington/5.56x45mm NATO, 16.1" Lightweight Barrel, A2 Upper with Fixed Carry Handle and Rear Sight, Black M4 Buttstock. Colt Government Carbine is a lightweight, compact package offering 5.56mm firepower with optimal mobility. The 4-position telescopic buttstock allows the Government Carbine to adapt to operators of different sizes and physical characteristics, as well as various firing positions and clothing variations. The M16A2 target sight is adjustable for windage and elevation to 800 meters. In today's demanding law enforcement environment, the Government Carbine is clearly an outstanding choice for patrol or tactical perimeter utilizations. Includes two 20 round magazines, cleaning kit, and a sling.