In the last thirty years muzzle brakes have become very popular in the shooting community. Muzzle brakes and compensators can be very helpful to the shooter both because of the great reduction in recoil and the ability to spot impacts or watch the bullet hit the target. For many years, installing a muzzle brake was a bit of a pain and sometimes a major headache. Traditionally they had to be installed by a gunsmith, with him or her using shims, crush washers, or some other crass device. But in 2011 that all changed when APA introduced the self-timing muzzle brake.