Suppressor

A suppressor or silencer is a muzzle that dampens the sound produced by a gun when fired. Equipping a firearm with a suppressor is vital to taking down enemies without alerting other nearby guards.

This item first appeared as the silencer in Metal Gear and Metal Gear 2: Solid Snake. It could be affixed to Solid Snake's basic handgun or submachine gun.

In Metal Gear Solid, the item was renamed to the suppressor, and could only be affixed to the SOCOM pistol. In the remake, Metal Gear Solid: The Twin Snakes, Snake also obtained an M9 tranquilizer gun that had a built-in suppressor.

In Metal Gear Solid 2: Sons of Liberty, Snake's M9 tranquilizer gun has a built-in suppressor. He can also find a suppressor for the USP pistol in the reworked version of the game, Metal Gear Solid 2: Substance. Raiden can find a suppressor for the SOCOM pistol and another for the AKS-74u rifle.

In Metal Gear Solid 3: Snake Eater, suppressors wear out every time the weapon that them are affixed to is fired. Suppressors can be removed from weapons to avoid wearing them out when not needed. Naked Snake can carry up to nine suppressors for each available weapon. Individual suppressors are available for the M1911A1 pistol, Mk22 tranquilizer gun, and XM16E1 rifle. The EZ Gun has a built-in suppressor that never degrades.

In Metal Gear Solid 4: Guns of the Patriots, silencers can be purchased for various firearms via Drebin Points.