Silencer

A silencer, suppressor, sound suppressor, or sound moderator is a muzzle device that reduces the sound intensity and muzzle flash when a firearm is discharged.

In the game, silencers are equipped on some weapons, usually belonging to the Red Team; Jones always carries an SMG with a suppressor throughout the game, Bradley carries a suppressed Mk 23, Foley carries a suppressed Beretta 93R in the first three missions, and Sherman carries a suppressed M11/9. Additionally, there is the VSS Vintorez sniper rifle in Kashmir, which is the only silenced sniper rifle in the game. There are no silenced assault rifles, light machine guns, and shotguns in this game.

Details
Silenced weapons generate a distinctive "pew" sound, as opposed to the regular "bang" of unsilenced weapons, although the game simply uses the exact same sound for all of the silenced weapons except for the VSS Vintorez, in which it uses a unique firing noise insetad. Silenced weapons also have a noticeably smaller muzzle flash.

A silenced weapon allows for killing enemies in a stealthy manner; doing so would cause the "stealth kill bonus" message to pop up. Additionally, silenced weapons tend to have better accuracy and lower recoil than unsuppressed ones, so the weapon can be used more comfortably.

All silenced weapons except for the VSS Vintorez have identically fast fire rates, which can be useful for sustained fire. Interestingly, this is also the case with Mk 23, which is a silenced pistol with semi-auto fire mode only.