We manufacture a Muzzle Brake, but like any very effective brake its designed for one rifle, one barrel length and one projectile weight. It took easily a dozen prototypes to get the optimum action.
This one is threaded
And this one is a clamp-on type.
Both are for the Swiss k31 7.5x55 rifle and the 175gr VLD type GP11 projectile.
Latigo
This one is threaded

And this one is a clamp-on type.

Both are for the Swiss k31 7.5x55 rifle and the 175gr VLD type GP11 projectile.
Latigo