-- BAN FREE RIFLE- NOW AVAILABLE FOR CIVILIAN PURCHASE !!! Very few. As a lightweight and compact platform, the AR15 provides law enforcement with the performance and accuracy for targets outside the handgun range. Model: AR6520 AR15A2 Govt. Carbine Finish: Black anodized receiver; black oxide barrel Action: Semiautomatic, gas operated, locking bolt Caliber: 5.56mm (.223 Rem) Capacity: 20 rounds; 30 rounds optional Barrel Length: 16.1" Overall Length: 32" to 35" Rifling Twist: RH; 1 turn in 7" Rifling Grooves: 6 Trigger: Smooth Front Sight: Adjustable Rear Sight: M16A2 target style; adjustable for windage and elevation Barrel length: 14 1/2"" Weight: 5.8 lbs.(empty)