Indexing a muzzle brake is a process by which you determine the correct position of the muzzle brake on the barrel of your weapon. There are several ways to do this, but one of the most common methods is to use a dummy round and adjust the brake until it is centered on the bullet.
Once it is correctly indexed, you should mark the position of the brake on the barrel with a permanent marker or some other type of indicator. This will ensure that your muzzle brake remains in alignment even after rounds are fired.
Anonymous edited answer September 24, 2022