1/2x28 Thread Protector - 0.712" OD -Black Carbon Steel [BTPR01]

AR-15 Barrel Thread Protector Nut for 1/2"x28tpi Muzzle Threading, Black Carbon Steel.  SKU:  BTPR01

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.