THE DEFINITIVE GUIDE TO KNIGHTS ARMAMENT SR-15 16 UPPER

A viton o-ring stops extractor vibration and raise, and a hard chrome exterior simplifies cleansing and upkeep. The 5.56mm three-Prong Flash Eliminator interferes with propellant fuel combustion forward with the muzzle to drastically cut down flash signature, won't ring upon firing or when struck, and is compatible Together with the Knight’s line