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Unique ar 15 muzzle brake12/3/2023 ![]() ![]() Flash suppressors, however, tame the flash generated when unburned or burning gunpowder particles and gases contact oxygen, but have little affect on recoil.įlash suppressors are also much quieter than muzzle brakes, making them far more suitable for personal protection use, especially indoors where loud guns cause significant hearing loss. What's the difference? Muzzle brakes tame recoil and muzzle jump but are tremendously loud and usually spit a pretty good fireball. If the purpose is self-defense, you'd be better served with a flash suppressor than a brake. Generally much smaller in diameter and featuring gas holes 360-degrees around the brake, they are somewhat less effective, but much quieter than more sophisticated, aggressive brakes.īefore choosing a muzzle device, it's important to consider the primary purpose of your AR-15. And yes, they are often set at a slight angle to counteract the rifling.īrakes that have gas ports but no baffles or expansion chambers are popular for bolt-action precision rifles and big game rifles. They are extremely effective - and obscenely loud - and are favored for very hard-recoiling rifles, or to completely eliminate the affect of recoil on competition rifles such as AR-15s. Often there are two or three massive gas ports on each side, and several smaller gas holes on the top. The most sophisticated, aggressive muzzle brakes generally incorporate both expansion chambers and gas ports, and sometimes very large, rearward-angled gas ports into their design. Blowing forward around the sides of the bullet and following it, the gases hit baffle after baffle and jet hole after jet hole, expanding into the expansion chambers and being redirected out the sides of the brake. Hot gases boil into the muzzle brake the instant the bullet's base exits the barrel, expanding violently and traveling at several times the speed of the projectile itself. It must be oversized to allow the bullet free passage - if the bullet touches the inside of the brake with even the pressure of a whisker, it will be thrown off and become inaccurate. These gases provide jet-like force immediately before, during and after the projectile actually exits the barrel, resulting in effective muzzle redirection.Ī close look at the brake/barrel interface and the brake's internal guts reveal that as a bullet exits the rifled portion and crown - the last point the projectile touches as it heads downrange - it enters a slightly oversized tunnel through the brake. Baffles inside the brake create an expansion chamber, and holes drilled into that expansion chamber bleed gas off at various angles to the axis of the barrel. Like the rocket drawings you saw on 7-Eleven comic book racks back in the day, muzzle brakes - also known as compensators - harness exploding gunpowder gases and "ejecta" - particles, burning and otherwise - and redirect them in order to change the acceleration, or movement, of the rifle. ![]()
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