Armaspec Harmonics Tuner Muzzle Brake 30 Cal 5/8-24

A muzzle brake and a barrel tuner in one piece. The tuner section shifts the harmonic node of the barrel in small increments, which is how benchrest and precision shooters chase a load that groups without touching the powder charge or seating depth.

The brake half does what a brake normally does. Gas gets vented out to the sides to hold the muzzle down and keep the rifle from climbing off target between shots, which matters more on a 30 caliber rifle than most shooters admit. Threading is 5/8-24, the common pattern on 30 caliber barrels, and the body is stainless steel so it holds up to the heat and pressure right at the muzzle.