Thunder Beast: 338 SR Muzzle Brake, M18x1.5 - .338 Cal
* All of these brakes have been test fired for pressure and have carbon on the inside of the ports
Muzzle brake for the Accuracy International rifles threaded M18x1.5
A robust brake with excellent tolerances !! Would love to have a video on the install as it’s not an easy process to install without damaging the muzzle.