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.
MSRP $4.99
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.