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

A viton o-ring stops extractor vibration and lift, and a hard chrome exterior simplifies cleaning and routine maintenance. The five.56mm 3-Prong Flash Eliminator interferes with propellant gas combustion forward in the muzzle to drastically minimize flash signature, will never ring on firing or when struck, which is appropriate While using the Knig