TACPOOL AR-15 Barrel Thread Protector Nut for 1/2"x28 Muzzle Threading

TACPOOL offers replacement components for the AR-15 that are made to strict military specifications. This high quality components will provide excellent fit and reliable function in your AR series rifle and are perfect for upgrading existing components or replacing worn or broken parts. AR-15 Barrel Thread Protector Nut for 1/2"x28tpi Muzzle Threading Protects your Barrels fore end threading when you have to remove your AR-15's Muzzle Brake. Fits Standard AR-15 Barrel threading 1/2"x28. Outer Diam: 0.712" Outer width is for standard barrels, not Bull barrels.  Outside textured for easy hand tightening.