223-1-2x28-nitride-muzzle-thread-protector-with-crush-washer-ar-15
223-1-2x28-nitride-muzzle-thread-protector-with-crush-washer-ar-15, Prevent Damage To Barrel Threads With This Thread Protector.Made from CNC Machined High Quality Steel for Black; Stainless Steel for Silver; 6061-T6 Color Anodized ALUMINUM for other colors.knurled for quick, No Tools Needed1/2"-28 Pitch ThreadsSolid Machined Construction