AR-10 .308 Barrel Thread Protector Nut for 5/8"x24 Muzzle Threading, Black. SKU: BTPR02
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 width is for standard type barrel thickness, not Bull barrels. Outside textured for easy hand tightening.