1/2x28 BULL Barrel Thread Protector - 0.915" OD - Black Carbon Steel [BTPR03]

AR-15 BULL Barrel Thread Protector Nut for 1/2"x28tpi Muzzle Threading, Black Carbon Steel.  SKU:  BTPR03

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: 0.915"

Outer width is for bull barrels, not standard barrels.  Outside textured for easy hand tightening.