muzzle device
auxiliary device attached to the muzzle of a gun, affecting the flow of the combustion gases
suppressor
device which reduces sound intensity or muzzle flash on a firearm
muzzle brake
muzzle device designed to counter recoil while firing by diverting gases
flash suppressor
muzzle device designed to reduce a weapon's visible signature while firing by diverting gases
blank-firing adaptor
rifle attachment used for blank ammunition; often a type of muzzle booster, depending on mechanism
muzzle booster
muzzle device augmenting the force of recoil on portions of the firearm
muzzle rise compensator
muzzle device designed to counter muzzle rise while firing by diverting combustion gases