A SIMPLE KEY FOR KNIGHTS ARMAMENT SR-15 16 UPPER UNVEILED

A viton o-ring helps prevent extractor vibration and lift, and a hard chrome exterior simplifies cleaning and maintenance. The five.56mm 3-Prong Flash Eliminator interferes with propellant fuel combustion forward from the muzzle to noticeably minimize flash signature, is not going to ring upon firing or when struck, which is compatible with the Kni