Silencer

The Silencer (also known as Suppressor) is a weapon attachment available in Call of Duty: United Offensive, Call of Duty 4: Modern Warfare, Call of Duty: World at War, Call of Duty: Modern Warfare 2, Modern Warfare 2: Ghost, Call of Duty: Black Ops, Call of Duty: Black Ops (Nintendo DS), Find Makarov, Call of Duty: Modern Warfare 3, Call of Duty: Black Ops II, Call of Duty: Black Ops: Declassified, Call of Duty: Ghosts, Call of Duty: Advanced Warfare, Call of Duty: Black Ops III, and Call of Duty: Infinite Warfare.

This attachment prevents gunfire from showing up on enemy minimaps and makes it harder to hear and locate the position of the shooter. It also reduces the muzzle flash of the weapon. As a disadvantage, the Silencer either reduces the range at which weapons do their maximum damage, damage of the weapon as a whole, or the damage done by the weapon at its longest range depending on what weapon the Silencer is used with.

Call of Duty: United Offensive
The first use of silencers in the Call of Duty franchise were in the Sicily levels of Call of Duty: United Offensive. A silenced Sten was the only default weapon Sgt. Doyle started with. He can acquire weapons from dead German soldiers, but the silenced Sten is given so the player can get up to the fortifications without alerting any enemies present. Ironically, all fire from the German weapons fail to alert any of the enemies, even though their arms do not use silencers.

If the player ends the first Sicily level with the suppressed Sten, it returns for the next level. However, it is very difficult to complete the mission with only the silenced Sten as the player cannot use the ammo from the MP40s, even though they share the same ammo magazines. However, it can be kept as a secondary weapon, using any captured German gun as a primary.

Call of Duty 4: Modern Warfare
"Invisible on GPS when firing, reduced muzzle flash, but shorter range."

- Attachment description

Campaign
Silencers are attached to the USP .45 in "All Ghillied Up", "One Shot, One Kill", "Ultimatum", "All In", "No Fighting In The War Room", and "Mile High Club", the MP5 in "Crew Expendable", "Ultimatum" and "Mile High Club", the M4A1 SOPMOD in a majority of MacTavish's missions, the M21 in "Blackout" and "All Ghillied Up", and the P90 in "All Ghillied Up".

In stealth-based missions, such as "All Ghillied Up" and the start of "Blackout", the silencer is necessary in order to kill with the player's gun. If using an unsilenced weapon, the enemies will be alerted, and at most, can lead to the player's failure of the mission.

Multiplayer
Silencers can be used on all pistols except the Desert Eagle, assault rifles except the MP44, and submachine guns. When a player fires a weapon without a silencer, they will temporarily appear as a red dot on the mini-map to enemy players. Firing a suppressed weapon will not cause the player to appear on the mini-map in this fashion. The silencer also reduces shot volume and muzzle flash. Note that a suppressed weapon grants no amnesty from the UAV Recon.

The "invisibility" afforded by the mini-map is invaluable for flanking or ambushing. Even when enemies are alerted to the player's presence, they must either call a UAV or make a visual in order to locate the player. Along with the reduced shot loudness, this makes it much more difficult to locate, and furthermore track, the player's movements.

The major disadvantage of the silencer is the reduction in damage over range. Damage over range is reduced to about 70% of its original value for submachine guns and pistols, and to less than 50% for assault rifles. It should be noted that at a 25m range and beyond, bullets from a suppressed assault rifle will be dealing their minimum damage, while an unsuppressed assault rifle will still be dealing maximum bullet damage. This emphasizes the use of silencers as a close to mid-range attachment.

Despite the range penalty, powerful and loud weapons such as the AK-47 or the M14 can become somewhat more manageable with a silencer in certain situations. Such weapons are often plagued with being a combat magnet from the range at which they can be heard firing. With a silencer, they become particularly devastating at mid range due to the stealth and sheer power.

As the only thing which can reveal a player on the radar while using suppressed weapons is a UAV, the UAV Jammer Perk is an obvious choice for those who wish to take the pure stealth option. A silencer with a UAV Jammer class can easily cause chaos in the rear lines of the enemy ranks. Attaching a silencer without the UAV Jammer is more risky than choosing a UAV Jammer without a silencer, as if an enemy player acquires UAV Recon, the player using the silencer will suddenly be revealed, taking the stealth effect provided by the silencer away. Therefore, on larger matches, it is preferable to either take both or just the UAV Jammer, as a well-timed ambush can kill many enemies in a short space of time, negating the need for a silencer as the impending threat of the enemies is removed. As an alternative, a suppressed pistol can be used, acquiring kills without alerting the enemy team of the user's location.

Flanking the enemy may also be an effective technique, achieved by use of Extreme Conditioning. Dead Silence may also be an effective choice, particularly in Search and Destroy, where players often tend to listen carefully for enemy footsteps.

The Silencer attachment is unlocked for completing Marksman II for submachine guns and assault rifles. The attachment is automatically unlocked for pistols when the pistol itself is unlocked, excluding the Desert Eagle, which cannot accept a silencer.

Old School Mode
The Silencer appears in Old School Mode as an attachment for weapons found in sprites.
 * Ambush - Found on the AK-74u in the alley in front of the USMC spawn at the southern half of the map, near Martyrdom.
 * Backlot - Found on the G3 on the second floor of the construction site, near the mounted M249 SAW.
 * Bloc
 * Found on the P90 at the intersection along the center road towards the northern end of the map, near Sleight of Hand and the Frag Grenade.
 * Found on the MP5 behind the stairs on the ground floor in the eastern apartment building.
 * Found on the G36C at the intersection along the center road towards the southern end of the map, near Juggernaut and the Frag Grenade.
 * Broadcast - Found on the P90 at the south-easternmost corner of the external rooftop.
 * Chinatown - Found on the Mini-Uzi between the fish market and the video store, near the AK-47 and Flashbang.
 * Countdown - Found on the M4A1 in the south-westernmost corner of the map, in front of the inaccessible building.
 * Crossfire - Found on the MP5 on the ground floor of the three-storey corner building, across the street from the bus, below the RPG-7.
 * District - Found on the USP .45 at the small alley intersection south of the well, near the market, south-east of the cafe.
 * Downpour - Found on the M4A1 in the middle of three houses towards the north-western corner of the map.
 * Killhouse - Found on the Mini-Uzi to the east of the center tower.
 * Overgrown - Found on the MP5 on the ground floor of the northern farmhouse, near the W1200.
 * Pipeline - Found on the Mini-Uzi in the underground tunnels in the center of the map.
 * Shipment - Found on the P90 at the south-east corner of the map, in front of the destroyed yellow car.
 * Vacant - Found on the Mini-Uzi inside the destroyed bathroom.
 * Wet Work - Found on the MP5 in the center of the map, between the two bridges.

Call of Duty: World at War
Working in the same fashion as their Call of Duty 4: Modern Warfare counterparts, the suppressor can be attached to the Gewehr 43 and all submachine guns except the PPSh-41. All the other rifles can attach a Flash Hider, which performs similarly to the suppressor. Oddly, the Gewehr 43 with the suppressor attachment will have the same reload animation for mid-magazine reloading as empty magazine reloading. The reload at mid-magazine is hastened so that it takes the same amount of time as a normal mid-magazine reload, but if the entire magazine is spent, it will reload as slow as it normally would. Enemies will have difficulty finding the player's exact position if he catches him off guard. Missed shots are also less detrimental with the suppressor, as the enemy will have more difficulty telling where the shots came from, however they will still hear the crack of the bullets flying past them and see the tracer shots.

Unlike Call of Duty 4: Modern Warfare, pistols do not have suppressors and they cannot be unlocked.

Weapon Compatibility

 * Gewehr 43
 * Thompson
 * MP40
 * Type 100

Call of Duty: Modern Warfare 2
Silencers return in Call of Duty: Modern Warfare 2 as an attachment for all weapons, with the exception of launchers, the Riot Shield, .44 Magnum, Desert Eagle, Ranger and Model 1887.

Submachine Guns, Pistols, and Machine Pistols suffer the least from equipping a silencer, as there is only a slight reduction in range with no reduction in base damage, so this attachment is highly recommended. Assault rifles suffer a considerable range reduction, but do not suffer a reduction in base damage. Silencers reduce Sniper Rifle base damage values from 70 to 50. Without Stopping Power, it will always require at least two shots to kill an enemy with any suppressed sniper rifle. Silencers also reduce base damage values by 10 on Light Machine Guns. Shotguns suffer an extreme reduction in range when using silencers, and are considered unusable by most players. The one exception to this is the Striker, which suffers much less of a range penalty than other shotguns when equipped with a silencer.

Due to a glitch, the silencer does not properly work on MG4, M240 and M9, as firing will still result in radar detection. However, it still affects noise and muzzle flash, but given it reduces the damage for MG4 and M240 and range for M9, its usage is questionable.

Modern Warfare 2: Ghost
A silencer is equipped on Simon "Ghost" Riley's Browning Hi-Power as he infiltrates Manuel Roba's house in Dead for a Day. Soldiers breaching through the windows in Dead And Gone also have silencers attached to their pistols.

Campaign
The suppressor appears on the AUG and the M1911 (if switched, before being replaced by the Crossbow later on) in the mission "WMD". It also appears on an FAL and a Skorpion in the mission "Operation 40", as well as being used by Carlos on his M16 when on the plane.

Multiplayer
The Suppressor affects the range of weapons with this attachment rather than the damage, except for the SPAS-12, which has no downsides to having a Suppressor attached as its range and damage are not reduced. In addition, sniper rifles get their damage reduced. The sounds made while firing are the same for most suppressed guns. However, the Commando, Galil, AK47, FN FAL, M14 and M16 do have a unique firing sound when a Suppressor is equipped.

Following the title update for Call of Duty: Black Ops, damage multipliers were increased for headshots on all sniper rifles that have an attached suppressor, making one shot kill headshots possible in all Core playlists. Prior to the 1.06 patch, however, players using Warlord as their Tier 2 perk and attached both a Suppressor and another attachment, the headshot multipliers did not take effect.

In the Nintendo Wii version of Call of Duty: Black Ops, the Enfield, Galil, AK47, and Commando have their fire rate reduced from 750 RPM to 625 RPM when equipped with a suppressor.

Call of Duty: Black Ops (Nintendo DS)
Suppressors are first seen on two weapons, the M14 and integrated into the Mk. 22 Mod. 0, though it is also available for the Dragunov, the PPSh-41, the Makarov PM, the M40 and the M10. It will prevent enemies from reacting to the player's shots, and keeps the player off the radar in multiplayer when shooting.

Find Makarov
John "Soap" MacTavish uses an MP5SD during an obstacle course in Find Makarov.

Call of Duty: Modern Warfare 3
"Invisible on radar when firing."

- Attachment description

The silencer reappears in Call of Duty: Modern Warfare 3 and was first spotted in the first reveal trailer being sported by several MP5s.

Campaign and Special Ops
It can be seen on some AK-47s, with or without the ACOG Scope or Grenade Launcher. The silencer can also be found on other weapons in the campaign, as well as weapons that the player starts off with. It can be found on starting weapons in missions such as "Mind the Gap" and "Eye of the Storm".

The silencer is also found in Special Ops, but only in mission mode. There is basically no difference in gameplay with the attachment when in campaign or Special Ops. The silencer can be found in missions including "Resistance Movement" and "Invisible Threat".

Multiplayer
In multiplayer, it can be used on nearly all the weapons with the exceptions of Launchers, the Model 1887, revolvers, and the Desert Eagle. It is unlocked at Weapon Proficiency Level 2 for Pistols and Machine Pistols, and Weapon Proficiency Level 5 for every other weapon. It behaves similarly to the previous versions, making the player not appear in the mini-map when firing, reducing the muzzle flash, sound and reducing the minimum and maximum range of the weapon by 25%. Suppressed sniper rifles have their base damage reduced at all ranges as in previous games. Silenced Light Machine Guns are still able to kill in three hits or less under normal circumstances, causing little detriment other than the opportunity cost of not using another attachment.

Call of Duty: Black Ops II
The Suppressor returns in Call of Duty: Black Ops II.

Multiplayer
Like in previous games, when the player fires a weapon with a Suppressor, they do not appear on the mini-map as a red dot, giving a stealth advantage. In addition, the shots are quieter and the weapon's muzzle flash is removed; however, using the Suppressor results in a loss of range. This is not the case for sniper rifles; instead their damage multipliers are modified, meaning fewer one-shot-kill areas. For the SVU-AS, the headshot multiplier is removed, preventing the SVU-AS from outright killing any enemy at 100 health in one shot in core game modes. For the DSR-50, the lower abdomen/stomach multiplier is removed, making its one-shot kill report identical to the Ballista and the XPR-50 without a Suppressor. The Ballista and the XPR-50's upper abdomen/chest multipliers are removed when using a Suppressor.

It also reduces center speed by two percent, resulting in a very slight recoil increase. On the SVU-AS, however, the centerspeed is reduced by ten percent, making the SVU-AS' recoil to settle, and combined with the Dual Band Scope, the centerspeed is reduced by a whopping 25%, making the SVU-AS' recoil take a lot longer to settle in between shots.

To prevent compensation for the range loss, Long Barrel is not available when using a Suppressor.

Zombies
The Suppressor appears in Zombies with a limited role: it can be obtained on the DSR 50 as one of the attachments gained when repeatedly Pack-a-Punching the weapon. It is also acquired on the Mauser C96 when Pack-a-Punched. Unlike in multiplayer, the attachment gives no stealth bonus at all, other than the reduced muzzle flash (which is arguably not a notable trait due to muzzle flash not showing when scoped in) and instead occupies one of the possible attachment slots, making it a rather bad final attachment choice.

Call of Duty: Black Ops: Declassified
"Invisible on radar when firing."

- In-game description

The Suppressor returns in Call of Duty: Black Ops: Declassified as the Noise Suppressor.

Call of Duty Online
The Silencer returns in Call of Duty Online. There is also a special silencer for the CheyTac M200 that allows for instant kills.

Call of Duty: Ghosts
"Invisible on radar when firing and reduces muzzle flash. Shortens effective damage range."

- In-game description

The silencer returns in Call of Duty: Ghosts. It prevents the player showing up as a red dot on the radar when firing, and reducing noise and muzzle flash of the gun in exchange for reducing range by 25% (or multipliers on Sniper Rifles). An interesting thing in the game code is that every weapon class has a separate code where it says the percentage of range lost. This means that in the future Infinity Ward will be able to change the effect of the silencer separately for each weapon class. The silencer has a different effect on sniper rifles; the multipliers of the weapon are changed so that the player gets fewer one shot kills to certain parts on the body. The Honey Badger, K7, and VKS have integral silencers, meaning that those weapons have the effects of the silencer as default instead of an extra attachment option, and those weapons don't have access to the Flash Suppressor, Muzzle Brake, or Chrome Lined.

Due to how typical gunfights take place at a longer distance than in other Call of Duty games, the Silencer can be a very risky attachment to use on Assault Rifles, LMG's, and Marksman Rifles due to the range penalty those weapons receive, and how those weapons strive at medium to long ranges. The attachment works best on close range weaponry in Ghosts, as it helps improve flanking and stealth strategies, which are useful with closer ranged weaponry.

The Silencer is unlocked by default for the P226 if one of the player's soldiers has the default stealth loadout, which includes a Honey Badger.

Call of Duty: Advanced Warfare
The suppressor returns in Call of Duty: Advanced Warfare. It prevents the player from being shown on the mini-map when firing, but reduces range by 25% (Damage will be reduced by 25% for Sniper Rifles). It can be countered by the Parabolic Microphone. Directed energy weapons like the EM1, Tac-19, and AE4 do not have access to the Suppressor. The Suppressor is also unavailable to the NA-45, Atlas 20mm, and the Blunderbuss.

Using the Suppressor restricts access to the Advanced Rifling attachment as to not counteract the Suppressor's range-reducing effect.

Due to the inclusion of exo movements in Multiplayer, flanking can be made a lot easier, and stealth strategies can be more potent than in previous games, making the Suppressor quite valuable in certain situations.

The IMR Hushed and the S-12 Quiet Time have integral Suppressors, restricting complete access from Advanced Rifling on those two weapons.

In the campaign mission "Aftermath", the suppressor on the Bal-27 is equipped with an integrated flashlight.

In Exo Survival, on the map Riot, the suppressor can be seen in the ending cutscene, as well as the Outbreak map opening in Exo Zombies. After an update, it is now also used by enemy Cloaked soldiers after the map is flipped.

Call of Duty: Black Ops III
The Suppressor appears in Call of Duty: Black Ops III. This iteration of the Suppressor allows the Long Barrel to be equipped in conjunction with the Suppressor to somewhat counteract its range penalties.

The attachment works differently on Assault Rifles, LMGs, the Argus  than on the other Shotguns, Sniper Rifles, the KN-44, the MX Garand, and Pistols (which have the typical weakness). Assault Rifles bar the KN-44 and MX Garand receive a 65% range reduction with it equipped, LMGs receive roughly a 90% range reduction with it, sniper rifles receive no modification to damage, body multipliers or range at all, and the Argus deals 10% less damage per pellet with the Suppressor equipped. All other weapons have a 30% range reduction with the Suppressor equipped.

Call of Duty: Infinite Warfare
The Suppressor returns in Call of Duty: Infinite Warfare.

Zombies
The suppressor is available as an attachment for weapon loadouts in Zombies. It has the unique function of drawing attention away from the player, making it possible to damage and kill zombies that may be chasing a teammate. This becomes especially useful in higher rounds, as a suppressed Baby's Breath can eliminate a hoard of zombies without the player never being detected, and the same can go for primary weapons.

General

 * Shooting a weapon with the silencer attached will reduce the vibration of the controller if it is enabled.

Call of Duty: Black Ops

 * Equipping a suppressor to the M14 would make tracer rounds invisible before an update.

Call of Duty: Modern Warfare 3

 * Silenced weapons often have different firing sounds in Campaign and Multiplayer.
 * In the beginning of "Hostage Taker", a silencer is seen being attached onto a USP .45.

Call of Duty: Black Ops II

 * In the campaign, the player can sometimes find a weapon with Suppressor and Rapid Fire despite this combination being impossible when customizing the loadout.

Call of Duty: Ghosts

 * In Extinction, when the player equips the Muzzle Brake attachment on the K7, the muzzle brake does not replace the silencer. Instead, it is attached to the end of the gun.
 * Also when the muzzle brake is attached to the K7, the silencer loses its muzzle flash-reducing ability but keeps its noise-reducing ability for the most part.