"Dampens weapon sounds including those of firing and impact. Once installed, will affect every shot fired from that weapon."
- Deus Ex: Invisible War description

A Silencer is a Weapon Mod in Deus Ex: Invisible War. Silencers muffle the sound of a weapon firing. Silencers are by far the most useful mod in the game, as they allow the player to kill enemies from afar without the danger of alerting others, The Silencer can be used effectively on any possible weapon, though it is especially useful on the Sniper Rifle, as the player is vulnerable between shots, and hiding is necessary. Silencers aren't that rare in Invisible War (there are about 6, with the first 4 found in Seattle).

Weapons/Weapon mods
Ammo scavenger EMP converter Fragmentary round Glass Destabilizer Increased damage Increased range Refire rate Silencer
Pistol X X X X X X X X
Boltcaster X X X X X X X X
Shotgun X X X X X X X
Sniper Rifle X X X X X X X X
Flamethrower X X
Mag Rail X X X X X X
Rocket Launcher X X X