308-5-8x24-lr308-nitride-thread-protector-with-crush-washer
308-5-8x24-lr308-nitride-thread-protector-with-crush-washer, Prevent Damage To Barrel Threads With This Thread Protector.CNC Machined High Quality Steelknurled for quick, No Tools Needed5/8"x24 Pitch ThreadsSolid Machined Construction