Construction
Construction of a brake or compensator can be as simple as a diagonal cut at the muzzle end of the barrel to direct some of the escaping gas upwards; some models of the AK-47 employed this feature. Another simple method is porting, where holes or slots are machined in the barrel near the muzzle to allow the gas to escape.
More advanced designs use baffles and expansion chambers to slow down the escaping gases; this is the basic principle behind a linear compensator. Ports are often added to the expansion chambers, producing the long, multi-chambered recoil compensators often seen on IPSC raceguns.
Read more about this topic: Muzzle Brake
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