A silencer, also known as a sound suppressor, suppressor or sound moderator, is a muzzle device that reduces the acoustic intensity of the muzzle report and eliminates muzzle flash when a weapon is discharged, by modulating the speed and pressure of the gas from the muzzle, hence suppressing the muzzle blast. A silencer can be a detachable accessory mounted separately onto the muzzle, or as an integral part of the barrel.

A typical silencer is a metal cylinder with internal sound baffles that slow and cool the escaping propellant gas, dissipating its kinetic energy over a longer time and over a larger area, thus reducing the blast intensity and decreasing both the sound volume and recoil impulse generated during shooting


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