KNIGHTS ARMAMENT SR-15 CQB 11.5 UPPER OPTIONS

A viton o-ring helps prevent extractor vibration and raise, and a hard chrome exterior simplifies cleansing and upkeep. The 5.56mm 3-Prong Flash Eliminator interferes with propellant gasoline combustion ahead on the muzzle to considerably cut down flash signature, will not likely ring on firing or when struck, which is compatible Along with the Kni