THE ULTIMATE GUIDE TO KNIGHTS ARMAMENT SR-15 CQB 11.5 UPPER

A viton o-ring prevents extractor vibration and lift, and a hard chrome exterior simplifies cleansing and servicing. The 5.56mm three-Prong Flash Eliminator interferes with propellant gasoline combustion forward in the muzzle to drastically minimize flash signature, will not likely ring upon firing or when struck, and it is suitable With all the Kn