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Call of Duty 4: Modern Warfare
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Call of Duty 4: Modern Warfare (also known as CoD4:MW, CoD4, Modern Warfare 1, and MW1) is the fourth main installment of the Call of Duty series, and first installment of the Modern Warfare trilogy, officially released on November 5, 2007 in North-America for the PC, PS3 and Xbox 360, developed by Infinity Ward and published by Activision. This is the first game in the series to be set in modern time, taking place in the year 2011 during a fictional conflict between the United States, United Kingdom, and Russia against Russian Ultranationalist Rebels and an unnamed Middle-Eastern country, their forces simply known as "OpFor". The player takes the roles of Sergeant "Soap" MacTavish, a marksman and demolition expert of the British SAS, and Sergeant Paul Jackson, a US Marine of the 1st Reconnaissance Battalion.
A remastered version titled Call of Duty: Modern Warfare Remastered was released on November 4, 2016 as a bonus alongside deluxe editions of Call of Duty: Infinite Warfare.
Warning: Major plot spoilers in some of the weapon descriptions.
The following weapons appear in the video game Call of Duty 4: Modern Warfare:
Handguns
Beretta 92SB
The Beretta 92SB, incorrectly appears in-game as the "M9", is the main sidearm of Sergeant Paul Jackson and many other Marines and enemies, though an M45 / MEU(SOC) would be more accurate to see in use by the Marines as they are part of the 1st Reconnaissance Battalion; this is somewhat fixed in the "Shock and Awe" level, where Jackson's secondary weapon is a Springfield Armory Loaded instead. In-game, the 92SB has the same damage figures as the USP and the 1911, but has the least effective range. This is offset with the highest magazine capacity (fifteen rounds of 9mm) and the lowest recoil, allowing quick follow up shots. It can be suppressed. Interestingly, the hammer stays in the half-cocked position at all times, despite the fact it should be fully cocked after the first shot. What appears to be a 92-series pistol can also be seen on the Porter Justice posters, a (fictional) movie that looks to be a standard over the top Asian action movie.
Beretta M9 (remastered version)
In Modern Warfare Remastered, the weapon is correctly modeled after a Beretta M9.
Heckler & Koch USP45
The H&K USP45 is the sidearm of "Soap" MacTavish and other SAS soldiers in the game, but it would be more accurate to see them using SIG-Sauer P226, SIG-Sauer P228 or Browning Hi-Power. It uses .45 ACP rounds in a 12-round magazine. Its recoil, capacity, and stopping power make this gun the most balanced in its class. Interestingly, the hammer stays down at all times, as if the weapon were DAO. It appears that at some stage in design this weapon was going to be a Heckler & Koch Mark 23 rather than a USP; it mounts the prototype Mark 23 LAM, and has a visible projecting barrel in both first and third person modes which would not be present on a standard USP45. Interestingly, the Modern Warfare 2 USP45 model also has the rear sights of a Mark 23 even though this version does not, most likely due to recycling parts of the scrapped Mark 23 model.
Remastered version
Springfield Armory PX9109L
A version of the 1911 makes an appearance in game as the "M1911 .45". The handgun it was modeled after can't be known for sure, but it is closest to a Springfield Armory PX9109L, more commonly known as the "Loaded" model. It has four aftermarket parts: a stainless barrel bushing, black guide rod, black guide rod plug, and brown Simonich Gunner grips. It also uses Wilson Combat 47D eight-round magazines, but they only hold seven in singleplayer for some reason. It is the sidearm of choice for Captain Price and Viktor Zakhaev. Price lends his PX9109L to Soap after their helicopter is shot down in an early level, uses it to execute a high value target around the middle of the game, and slides it to Soap on the bridge at the end of the game. Staff Sergeant Griggs carries a stainless version with black grips, and uses it while pulling Soap to cover on the bridge. The stainless version can also be seen in the SAS armory. It can be suppressed. The weapon's hammer is never in the cocked position, which would be required to be able to fire this single-action pistol; oddly it is always in the half-cocked position.
IMI/Magnum Research Desert Eagle Mark XIX
The Desert Eagle, chambered for .50 Action Express (ingame), is the most powerful pistol. It holds seven rounds in its magazine and has the worst recoil. The main villain Imran Zakhaev carries this pistol as his weapon of choice. In the opening credit sequence, Zakhaev gives it to Khaled Al-Asad to kill President Yasir Al-Fulani. The only opportunity to use a Desert Eagle in singleplayer is in the level "Crew Expendable," where an Ultranationalist attacks with two of them. One with a black slide and barrel can be seen in the SAS armory. This gun is one of six multiplayer weapons that can have a gold finish. The weapon's hammer never in the cocked position, which would be required to be able to fire this single-action pistol. The ammo name for the Desert Eagle in the game files is .357 Magnum.
Submachine Guns
Heckler & Koch MP5N
The H&K MP5N is often used by "Soap" MacTavish and some of the SAS soldiers, along with the Marines in Russia and Captain "Deadly" Pelayo after her AH-1W "Super Cobra" is shot down, and also by some enemies. The MP5 fires 9x19mm rounds from a thirty-round box magazine. Accurate and decently powerful, it is a popular all-around weapon in multiplayer.
Remastered version
Heckler & Koch MP5SD3
"Soap" MacTavish and other SAS soldiers wield H&K MP5SD3 in the prologue and epilogue levels. When a suppressor is attached to an MP5 in multiplayer, it becomes an MP5SD3 with a Navy trigger group.
Remastered version
Skorpion SA Vz. 61
Some enemies use the SA Vz.61 Skorpion. Its high short-range damage, lack of recoil, and extreme rate of fire make it effective up close, balanced by a slow reload, low capacity (twenty .32 ACP rounds), and weak long-range damage. The weapon also has very little muzzle climb. Due to an early bug in multiplayer, where its damage did not decrease when silenced, the weapon has been banned from all major competitive leagues. The ban is likely for its ability to cause fifty damage at close range (half the regular health, 1/4th of the damage in Old School, and kills in one shot on Hardcore).
IMI Mini Uzi
Many enemies use the Mini Uzi. Modeled with weaker damage, it fires 9mm rounds from a thirty-two-round magazine. The high rate of fire and bouncing recoil leave its accuracy poor for all but the shortest ranges. Viktor Zakhaev carries one while escorting Al-Fulani to his execution, and while running from Soap, Gaz and Griggs. It is incorrectly shown firing from a closed bolt. This gun is one of six weapons in multiplayer that can have a gold finish.
Remastered version
FN P90 TR
The FN P90 TR, a version of the P90 with three accessory rails, is a rarely seen weapon (it is occasionally used by some enemies). Its sole "special" appearance is in "All Ghillied Up" as the P90SD (with suppressor and red dot sight), while in "Heat" and the epilogue mission "Mile High Club" it is simply an unsuppressed P90 using open rail iron sights. All versions fire 5.7x28mm rounds from a fifty-round magazine. The P90 is modeled with relatively weak per-hit damage and mediocre accuracy, relying on a high rate of fire and large magazine capacity for its effectiveness. The weapon is easy to wield in multiplayer, so much so that it has been restricted in competitive play due to its "spray" advantage over other weapons. Despite however many additions, it always has an unused laser attached to the side rail and H&K Diopter sights if it does not have a special sight.
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Shotguns
Winchester 1200
The Winchester 1200 appears as the "W1200" and is used by some of the Marines and many enemies throughout the game. Gaz pulls out a Model 1200 in "Crew Expendable." Lieutenant Vasquez carries one without the stock on his back, although he never uses it. It is powerful at close range, but is slow to reload and cannot even hit anything past ten meters. Marine use in-game can be considered erroneous, as the US Marine Corps use the Mossberg 590/590A1.
Remastered version
Benelli M4 Super 90
The Benelli M4 Super 90 appears as the "M1014." It has a higher rate of fire than the W1200, but a lower magazine capacity (in multiplayer) and, like the W1200, a slow reload time. It is used by some Marines and by Soap MacTavish in "Safehouse." The player never cocks the weapon on an empty reload, which would mean that a round isn't chambered and the gun couldn't fire. This gun is one of six weapons in multiplayer that can have a gold finish. In multiplayer the weapon holds four rounds but in singleplayer it holds seven rounds. This was also the only semi-automatic weapon, prior to a post-release patch, and in the remaster, to not have a ridiculous maximum rate of fire, as it's capped at 300 rounds a minute, as opposed to the 1200 RPM exhibited by the other semi-auto weapons. Said patch dropped the max ROF for the G3 and M14 down to 444 RPM due to these two weapons being ripe for exploit with modded controllers (or, on PC, the classic trick of binding "fire" to the mouse scroll wheel).
Assault Rifles & Battle Rifles
"AK-74u"
A mix-and-match of different Kalashnikovs appears in game as a submachine gun under the name "AK-74u." While it handles like the other SMGs and its damage is modeled equivalent to the H&K MP5, the AK-74u penetrates walls and other cover like the other assault rifles, a trait it does not share with the other SMGs, though in return its sights also have more pronounced idle sway like an assault rifle. With decent power and accuracy, the AK-74u is an effective close- and medium-range weapon. In the campaign, it is mostly seen in the hands of Al-Asad's Middle East forces, and has a slower rate of fire than in multiplayer. One with a GP-25 is seen in the S.A.S. armory. It is modeled on the JG "AK Beta-F" airsoft rifle, which is an AK-47 with a very short front end, an AKS-74U gas block/front sight, flash hider, and rear sight, and black polymer furniture with an RIS rail on the handguard. The version in game has bakelite magazines, which led to some to believe it actually was a 74; the curve of the magazine and grooves on the magwell give away that it is based on a 47.
AKS-74U (remastered version)
In Modern Warfare Remastered, the weapon is modeled after an actual AKS-74U, but it is still has the original model's underfolding stock and black furniture.
M16A4
The M16A4 is one of the available assault rifles in the game, used by many of the U.S. Recon Marines. Lt. Vasquez carries an M16A4/M203 combo as his weapon of choice. In-game, the M16A4 is attributed with almost the same damage as the AK-47 and G3A4, despite the real weapon having far from the energy of either. In single-player, the M16A4 incorrectly fires fully automatic (like the M16A3), unlike in multiplayer, in which it is depicted accurately, firing in three-round burst mode. This makes an on-target salvo from the M16A4 very effective, but also makes misses much more costly, especially in close-quarters when pitted against full-auto weapons. Optics mounted on the M16A4 remove the front sight and gas block, which would render the gun unable to cycle automatically after the first shot, and the shooter would have to manually rack the bolt to load the next round into the chamber, effectively making the gun bolt-action. In addition, when not equipped with an M203, the third-person model appears with the standard M16A2-style handguard instead of the KAC M5 railed handguard with covers that appears in first-person. When equipped with a M203, the old dedicated M203 heat shield is used instead of the KAC railed handguard, giving the weapon the appearance of an M16A2. The weapon also appears to be using an M16A1 flash hider and it has an M16A1 carrying handle in third-person (if optics are not equipped).
Remastered version
Kalashnikov AK-47
Most enemies and incorrectly Russian soldiers use the AK-47 instead of the AK-74M. It is also hybrid, featuring the early stamped receiver of a Type I AK-47, but the ribbed top cover from the later AKM. It fires 7.62x39mm rounds from a thirty-round magazine. Some of them have GP-30 40mm muzzle-loaded grenade launchers mounted on them. They feature a similar detonation safety as the M203 rounds, which is supposed to deter close-range use, but instead encourages it due to its lethal impact damage. It is powerful, relatively accurate, and the equivalent to the M16 rifle. The AK-47 has become an established favorite online, and especially in the competitive leagues, for many of the same reasons it has in the real world: it is powerful and flexible, offering dependable performance in nearly every situation. This gun is one of six weapons in multiplayer that can have a gold finish, this one most likely inspired by Saddam Hussein's gold-plated AK-47.
AKM (remastered version)
In Modern Warfare Remastered, the AK-47's weapon model has been changed to that of an AKM, as indicated by the sloped flash hider and the straight stock.
Colt AR-15A3
The civilian Colt AR-15A3 (distinguishable by its 16 inch non-stepped heavy barrel) is one of the main assault rifles featured in the game. The AR-15A3 (a semi-automatic only weapon) is referred to as an "M4A1" (a full-auto firing weapon) in singleplayer, but as an "M4 Carbine" (a three-round burst firing weapon) in multiplayer, and while it actually fires full-auto in game, its fire selector switch is always set to semi-auto. The weapon features a Colt Canada C8 four-position collapsible stock, an M16A1 pistol grip and M16A1 flash hider, a KAC RIS handguard, and lacks a bayonet lug. It also has KAC rail covers on whatever rails are not in use (meaning always one on the right side), but they are only visible from a third-person view, and is equpped with a KAC foregrip as standard, but it is not visible in third person. If selected, the AR-15A3 can use an M203 grenade launcher; the third-person model of the launcher is oddly scaled down to about half the proper size, though the first-person model is scaled correctly. If optics are attached, the front sight/gas block is removed to provide a clearer sight picture, however this raises the same issue as the M16A4 above. Attachments available for the AR-15A3 in the multiplayer are: a Sightmark Sure Shot reflex sight, a Trijicon 4x32 ACOG, an M203 grenade launcher, or a suppressor. As expected, the Sure Shot and ACOG replace the carrying handle, the M203 replaces the KAC foregrip, and the Suppressor replaces the M16A1 flash hider. In singleplayer it appears in one of four specialized versons. There is a fifth, unused version called "M4 SOPMOD," that has the same attachments as the weapon of the same name in the actual game, except having iron sights. It can be seen in the SAS armory and can be acquired through the "Give All" cheat in the developer's console on the PC version while on the level "All In."
M4A1 (remastered version)
In Modern Warfare Remastered, the weapon is correctly modeled after an M4A1.
Heckler & Koch HK91A3
The Heckler & Koch HK91A3, noted by lack of paddle magazine-release, collapsible stock, and two position fire selector (which is always set to safe, even with the animation for picking one up off the ground showing the player release the safety with his left hand), incorrectly designated as a "G3" in-game, is a common battle rifle used by the enemy factions. While firing on full-auto in single-player, in multiplayer it is restricted to semi-auto, but with a greatly increased maximum rate of fire (1200RPM vs 600RPM). The HK91A3 fires 7.62x51mm NATO from a twenty-round magazine. In the game, the base damage from this weapon is inaccurately equivalent to both the AK-47 and M16A4, though it seems to have better damage at range. The M1A, which fires the same ammunition and is in the same class, is accurately modeled as more powerful than rifles firing intermediate cartridges such as the 5.56x45mm NATO or the 7.62x39mm Soviet. The in-game weapon accurately reflects the high accuracy of the G3 however the amount of recoil is inaccurately portrayed as being very low when firing.
Remastered version
Whereas most of the above weapons were replaced with the proper models they were named after for Remastered, the HK91A3 has made it into the new version with no significant modifications to turn it into a different weapon.
Heckler & Koch G36C
The H&K G36C is the first weapon the player get to use in the campaign. It is Gaz's signature weapon, and also used by other SAS soldiers, the Russian loyalists in the mission "Safehouse" and by many enemies late in the game. It anachronistically appears in both missions set in 1996, despite the G36 series not entering Bundeswehr service until 1997, and the G36C itself not being introduced until 2001. It is always equipped with a Tasco red dot scope in single-player. It has slightly heavier recoil than the Colt AR-15A3, but a higher rate of fire and much less sight sway. It is modeled with equal damage to the AR-15A3, reflecting its intermediate status as a carbine. It is incorrectly depicted with a weighted magazine that is released by flicking the weapon downwards; G36 magazines are removed by actuating the paddle forward of the trigger guard, similar to the AK-47.
Springfield Armory M1A
The Springfield Armory M1A appears exclusively in multiplayer with a black stock, silver Knight's Armaments RAS, a silver RAS scope mount, and black rail covers on the side rails. It is referred to in game as the M14, however this is not the case as it lacks the bayonet lug under the front sight. It does have the fire-control lever present on the right side of the receiver, but this is probably the result of using a modified version of the M21's model. It fires 7.62x51mm from a twenty-round magazine, like the G3, but unlike the G3 is accurately portrayed as being significantly more powerful than the other assault rifles, and has a hefty recoil befitting the powerful cartridge. Like the G3, the semi-auto sniper rifles and pistols, its maximum rate of fire is a ridiculous figure of 1200RPM.
Sturmgewehr 44
The Sturmgewehr 44 can be seen being held by Viktor Zakhaev in a photo of him during the intro to the mission "Sins Of The Father." Otherwise it only appears in multiplayer, referred to as the "MP44" (as it was in earlier Call of Duty games), being powerful with no sway whatsoever while aiming (which it shares with the burst firing M16 and the 2 semi-auto rifles in its class), but has high recoil and low accuracy during sustained fire. It appears as a nod to the previous Call of Duty games. It is also the same model of STG-44 from Call of Duty 2. It is incompatible with the attachments available for other assault rifles (another throwback to the earlier titles, where weapons could not be modified beyond adding scopes to bolt-action and semi-auto rifles), but it can still accept camouflage.
Sniper Rifles
A programming bug makes all weapon scopes use the "scope_overlay_m40a3" image (the M40A3 reticle) rather than their own; the game files contain seven other reticle models, including two separate ones for the M21.
M40A3
The M40A3 is only usable in multiplayer, most likely due to a USMC sniper mission being cut from singleplayer, and is similar in performance to the R700. It is more accurate and nearly as powerful. It holds five rounds of 7.62x51mm NATO in an integral box-magazine and has to be loaded one bullet at a time. One with a black stock can be seen in the SAS armory. In multiplayer, it is the most popular sniper rifle, due to an oversight that increases its base damage when attached with an ACOG scope.
M21
The M21 Sniper Rifle appears in this game in both suppressed and unsuppressed versions. Both SAS and Marine snipers use it. It is a top of the line M14 rifle fitted with a scope (and a silver RAS mount for that scope), silver Knight's Armaments RAS, black rail covers on the side rails, and a smaller ten-round magazine. It is fitted with a "Leupold Mark 4 6.5-20x50mm ER/T" scope. The rear end seems to be enlarged in game, most likely something to do with the scoping-in animations working properly, and the whole thing is also mirrored.
Dragunov SVD
All enemy snipers use the Dragunov SVD. Its random recoil makes it difficult to use. This gun is one of the six weapons in multiplayer that can have a gold finish.
Remastered version
Remington Model 700P
The Remington Model 700P appears as the "R700." It is very powerful but has the shakiest scope view, heavy recoil, and frequently misses where it as actually shooting. It only appears once in single player, used by "Soap" MacTavish at the beginning of "Sins of the Father." It holds four rounds of 7.62x51mm NATO in an integral box magazine and has to be loaded one bullet at a time. The caliber is determined based on the size of the bolt and breech. Though the M40A3 is very much the same weapon, they have slightly different attributes in-game.
Barrett M82A1
The Barrett M82 appears once in the single player mission "One Shot, One Kill" as a stationary weapon (with variable zoom and unlimited ammunition), which Lieutenant Price uses to take the titular shot. It is an unlockable weapon in multiplayer, where it is the most powerful rifle available. Much is made of the supposedly realistic ballistics in "One Shot, One Kill;" a long list of factors affecting the shot is given, but the only two actually accounted for are bullet drop due to range and deflection due to wind; the weapon does fire modelled projectiles in this sequence rather than using hitscans. The actual purpose of the long-range shot is rather less than realistic; the first shot the player fires which intersects Zakhaev's hitbox will always curve and hit his arm no matter where it was aimed, while all subsequent shots, regardless of aim, will curve away and miss him. This odd "force field" is later seen again when the player is tasked with firing RPGs at a helicopter with Zakhaev in it, and they will always curve away from it to miss.
Machine Guns
FN M249E2 SAW
The M249E2 appears in the game, used by the US Marines (Most notably Staff Sergeant Griggs) and members of the SAS (standing in for the FN Minimi). The M249 loads a hundred-round belt of 5.56x45mm. Its rate of fire is greater than the RPD or M60 but does less damage. Its recoil is greater in single player than in multiplayer. It can mount a grip, ACOG scope, or red dot sight.
Remastered version
Degtyarev RPD
The Degtyarev RPD Light Machine Gun is the enemy's support weapon. It fires 7.62x39mm rounds from a hundred-round belt box. Mounted RPDs are usable in "Shock and Awe" and "Safehouse." It is the most accurate machine gun when aiming down the sight (even without an ACOG or red dot sight), but has poor hip-fire accuracy and takes almost ten seconds to reload. It is incorrectly seen in the hands of Russian troops, who have actually switched to the PKM.
Remastered version
M60E3
The M60E3 appears, incorrectly referred to as the M60E4, which has a much shorter barrel and larger handguard than the E3. It only appears once in single player, at the end of the game, used by one of the soldiers accompanying Zakhaev. It has a higher rate of fire in single player than in multiplayer. It fires 7.62x51mm rounds from a hundred-round belt box. It is the strongest machine gun, but it suffers from damage drop-off at long ranges and also takes almost ten seconds to reload. This gun is one of the six weapons in multiplayer that can have a gold finish.
Launchers
M203 Grenade Launcher (Airsoft)
An airsoft version of the M203 grenade launcher, distinguishable by its distinctive RIS mount, appears as the standard grenade launcher for every weapon except the AK-47. Since a direct hit with even an unarmed shot is an instant kill, the M203 has earned the nickname "Noob Tube." Equipping an M203 prevents that class from using Perk 1. When mounted on the AR-15A3 and M16A4, the third-person model's lower receiver height is stretched and gives it a somewhat silly appearance, and the M203 itself is too small in scale in third-person, by about half. It also lacks a trigger guard.
Remastered version
GP-30 Grenade Launcher
The GP-30 grenade launcher is seen on the AK-47 only and is mislabelled as a GP-25; however, the quadrant sight for the launcher is mounted on the right-hand side of the weapon, while the GP-25's is mounted on the left. One is also seen mounted on an "AK-74U" in the SAS armory. While the grenades do the same damage as the M203's, the GP-30 has a much faster draw time, but slightly slower reload.
Remastered version
RPG-7
The RPG-7 is commonly seen in enemy hands and can be used by the player in-game. In multiplayer it is a good weapon against helicopters but has abysmal accuracy at long range due to the round spiraling unpredictably, probably because it doesn't deploy its stabilizing fins after launch.
Remastered version
FIM-92A Stinger
FIM-92A Stingers appear in enemy weapons caches in "Hunted" and "All Ghillied Up," though using one in the latter mission runs counter to its stealth aspect. They are used against enemy helicopters, one of which is on the ground with multiple trees and vehicles surrounding it; it's kind of surprising the Stinger can even get a lock.
FGM-148 Javelin
The FGM-148 Javelin anti-tank guided missile launcher is used in the single-player missions "War Pig" and "Heat" to destroy enemy tanks; it is single-shot and requires a lock-on to fire and can only lock onto (and thus fire at) those tanks; in-game the entire unit, launch tube and command launch unit combined, is discarded after firing for the user to pull a new fully-formed one out of nowhere. A direct-attack mode Javelin can be found near the missile silos on "All In."
Remastered version
M136 AT4
Some Marine NPCs have an M136 AT4 strapped to their packs. It was cut as a usable weapon from the final game, but is accessible in "Shock and Awe" through the "Give All" cheat.
RPG-27
The RPG-27 is seen strapped to the packs of several Ultranationalists.
Explosives
M67 Hand Grenade
The frag grenades seen in game are M67 hand grenades. They bounce much greater than their real-world counterparts and inflict damage solely through concussive force. In singleplayer, the player begins each level with four grenades. In multiplayer, everyone has one grenade and can choose a perk to carry three.
Remastered version
M84 Stun Grenade
M84 stun grenades appear as both the stun and flash bang grenades, oddly having its uses split between the two. In multiplayer, a player can select either a flashbang or a stun grenade as special grenades, and carry three with a perk.
Remastered version
M83 Smoke Grenade
M83 smoke grenades only appear in single player in "All In" and "Heat." Smoke grenades in multiplayer cannot be used in conjunction with the "Special Grenades x3" perk.
M18 (remastered version)
In Modern Warfare Remastered, the M83 is replaced with the M18 smoke grenade.
M18A1 Claymore Mine
The M18A1 Claymore Mine appears in the single-player levels "Blackout" and "One Shot, One Kill." They are also available in multiplayer, where a player can equip two Claymores as a perk.
C4
C4 packs can be used in both single and in multiplayer by equipping the C4 perk.
Remastered version
RGD-5 hand grenade (Remastered only)
The RGD-5 hand grenade is added to the models of some enemies in Modern Warfare Remastered. It is unusable in gameplay.
Mounted Weapons
M240C
The M240C can be seen mounted coaxially on the M1A1HA Abrams.
M240D
The M240D is seen mounted on the loader's hatch of the M1A1HA Abrams tanks in several missions.
Browning M2HB
The Browning M2HB is seen mounted on the commander's hatch of M1A1HA Abrams tanks in several missions. It is not supposed to be available to the player at any point, but a usable M2HB on a stand is outside the map in "Charlie Don't Surf," accessible by exploiting a bug.
Remastered version
General Dynamics GAU-17/A
The General Dynamics GAU-17/A appears as a usable stationary weapon mounted on a downed helicopter in the mission "Heat" and is used by a door gunner on a Black Hawk in both "Crew Expendable" and "The Sins of the Father." That the M134 in "Heat" works at all is miraculous: an aircraft-mounted M134 is attached to the craft's electrical system, since it needs external power to function. Unlike later Modern Warfare games it does not have a slotted flash hider, but does have the additional barrel discs of a GAU-17 rather than the single clamp of a Dillon Aero model
Mk. 19 Automatic Grenade Launcher
The Mk 19 grenade launcher appears as a usable weapon mounted on a CH-46 Sea Knight helicopter in the mission "Shock and Awe," its use governed by a heat gauge.
M242 Bushmaster Chaingun
An M242 Bushmaster Chaingun can be spotted mounted on an M2A2 Bradley IFV in the multiplayer map "Ambush".
Kurzer 8 cm Granatwerfer 42
An unusable Kz 8cm GrW 42 mortar can be seen on the never-used explosive training range on the South side of the SAS base in "FNG." This model is actually lifted directly from Call of Duty 2.
Shipunov 2A42
The Shipunov 2A42 is mounted on Mi-28N Havoc helicopters, used by both Russian loyalist forces by the Ultranationalist party during the missions "All Ghilled Up" and "One Shot, One Kill." The latter use is anachronistic, as the mission takes place in the year 1996 and the all-weather Mi-28N (distinguished by the mast-mounted radar) was not operational until 2006; the first prototype didn't even fly until November of 1996.
General Dynamics M197 Vulcan
The M197 Vulcan is mounted on AH-1W Super Cobras used by the US Marines. In multiplayer, the Super Cobra is the support helicopter for both US Marines and SAS, awarded for 7 kills in a row.
General Electric GAU-12/U
A GAU-12/U is mounted on the AC-130U Spooky in the mission "Death From Above," alongside the Bofors 40mm and M102 Howitzer.
Bofors 40mm
The Bofors 40mm is mounted on the AC-130U Spooky in the mission "Death From Above," alongside the GAU-12/U and M102 Howitzer.
M102 105mm Howitzer
The M102 105mm howitzer is mounted on the AC-130U Spooky in the mission "Death From Above," alongside the GAU-12/U and 40mm Bofors.
Not Usable
Glock 17
The Glock 17's silhouette appears in the "Last Stand" and "Overkill" perk symbols.
Izhmash AKM
In some levels, "Soap" MacTavish can find posters on the walls with the details of an AKM assault rifle.
M1928A1 Thompson
In a nod to the previous Call of Duty installments, WWII-era posters of a woman holding an M1928A1 Thompson can be found in various buildings, one being the SAS armory.
PPSh-41
Many statues throughout the campaign and multiplayer levels are of Russian soldiers holding PPSh-41. No usable PPSh-41 appears in-game.
