TacFire MZ1021 Thread Crown 223 Rem/5.56 NATO Muzzle Brake 1/2"-28 tpi Black Oxide Steel TacFire's Thread Crown muzzle break is constructed of steel and made in the USA.
This 223/5.56 model has 1/2"x28 tpi and a black oxide finish. Type: Muzzle Brake Model: Thread Crown Material: Steel Thread Pattern: 1/2"-28 tpi Finish: Black Oxide
