Suppressor 抑制器
（重定向自Sound suppressor）
![Several firearms with detachable suppressors, from top to bottom: an Uzi, an AR-15, a Heckler & Koch USP Tactical, a Beretta ***S, and a SIG Mosquito](/Images/godic/202502/12/Suppressors2414.jpg")
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![Cross-section drawing of a BR Tuote rifle suppressor, showing expansion chamber](/Images/godic/202502/12/ReflexSuppressor-WP-Drwg2415.png")
![Cross-section drawing of a US Navy Hush Puppy Mk 2 pistol suppressor, showing expansion chamber wrapped around inner suppressor assembly, and four wipes. The bullet pushes a bullet-diameter hole through the wipes, trapping propellant gas behind it entirely until the bullet has passed through the wipe completely](/Images/godic/202502/12/Navy-HushPuppy-WP-Drwg2415.png")
A suppressor, sound suppressor, sound moderator, or silencer is a device attached to or part of the barrel of a firearm or air gun which reduces the amount of noise and visible muzzle flash generated by firing. Suppressors are typically constructed of a metal cylinder with internal mechanisms to reduce the sound of firing by slowing the escaping propellant gas and can also slightly increase the speed of the bullet.