AR-10 .308 Barrel Thread Protector Nut for 5/8"x24 Muzzle Threading and 0.915" diam, Black SKU: BTPR02
Protects your Barrels fore end threading when you have to remove your AR-10's Muzzle Brake. Fits Standard AR-10 Barrel threading 5/8"x24 with a 0.915" diam. Outer width is for standard type barrel thickness, not Bull barrels. Outside textured for easy hand tightening.