Weapon Camouflage, usually referred to as Camo, is a colored pattern applied to weapons to allow them to blend in to environments, although it is more often used for players to "show off" their achievements in-game as in Call of Duty 4: Modern Warfare and Call of Duty: Modern Warfare 2 camouflages are unlocked by Headshots. In Call of Duty: Black Ops, camouflages can be purchased for 250 each, with the exception of Golden Camouflage, which costs 50,000 and is available only after the player has Prestiged 14 times. In Call of Duty: Modern Warfare 3, weapon camouflage is achieved by increasing the weapon level of a weapon. In Call of Duty: Black Ops IIand Call of Duty: Black Ops III, they are achieved mostly through headshots, one-shot kills or aircraft destroyed depending on the weapon type. After the camouflages that require the aforementioned, there are different challenges to unlock them, such as killing a certain amount of enemies with no perks equipped. In Call of Duty: Ghosts they are achieved getting kills, assists, long shots, rescue kills, kills in one life, point blank kills, kills shortly after reloading, shortly after sliding, with no attachments, while leaning, while crouched, winning a clan war in gold division or higher, and leveling the clan up to clan level 23.
Camouflages were planned to be in Call of Duty: World at War, but Treyarch canceled this idea to save memory. In addition (according to them), camouflage on most weapons did not look appealing.
In Call of Duty: Black Ops II,Treyarch introduced DLC Camouflages which could be purchased in separate packs. Each comes with the camouflage, three custom reticles, as well as a Calling Card.
Desert Camouflage - A camouflage based on brown and beige colors. Available immediately.
Woodland Camouflage - A camouflage based on brown and green colors. Available immediately. (Note: During the campaign mission "One Shot, One Kill" a unique, predominantly green and black woodland camouflage is present on both the player's and Captain MacMillan's M21 rifles.
Digital Camouflage - A camouflage based on gray and black colors. Unlocked at 25 headshots.
Blue Tiger Camouflage - A camouflage based on blue and black colors. Unlocked at 75 headshots (50 for shotguns).
Red Tiger Camouflage - A camouflage based on red and black colors. It appears as mere red lines along the gun's normal furniture. Unlocked at 150 headshots (100 for shotguns).
Golden Camouflage - A golden camouflage. Complete all challenges for that category of weapon (for example, a golden AK-47 requires all of the assault rifles' challenges complete). Once all challenges are completed for a category of weapon, players will unlock a gold covered variant of one particular weapon from that category. Players can only unlock gold camouflage versions of the AK-47, Mini Uzi, M1014, M60E4 and Dragunov in this manner. Golden Camouflage is also unlocked automatically for the Desert Eagle at Level 55.
Unknown Arctic Camouflage - A variant featured on the player's ACR rifle during the campaign mission "Cliffhanger". It features several blue hues, most closely resembling a hybrid between the Arctic camouflage, and the Warsaw camouflage from Call of Duty: Black Ops.
Weapon camouflages return again in Call of Duty: Modern Warfare 3. Camouflages are earned by ranking up one's weapon rather than through headshot challenges. There are no secondary weapon camouflages present in the game.
There are thirteen weapon camouflages:
Classic - Similar to Woodland camouflage from Black Ops. This camouflage unlocks at weapon proficiency level 3.
Snow - Similar to Urban camouflage, but with white spots. This camouflage unlocks at weapon proficiency level 5 and 6.
Multicam - A mix between Classic, Snow, and Desert camouflage. This camouflage unlocks at weapon proficiency level 6, 7 and 8.
Digital Urban - Classic camouflage, but in darker hue and MARPAT. This camouflage unlocks at weapon proficiency level 8, 10 and 11.
Hex - Rock and hexagonal pattern. This camouflage unlocks at weapon proficiency level 10, 11 and 16.
Choco - Similar to Nevada camouflage from Black Ops. This camouflage unlocks at weapon proficiency level 13, 14 and 20.
Snake - Similar to Call of Duty 4's alternate desert camouflage. This camouflage unlocks at weapon proficiency level 18 and 23.
Blue - Appears to be a blue paint spill. This camouflage unlocks at weapon proficiency level 21, 23, 24 and 25.
Red - Similar to Digital Camouflage from previous game, but in red. This camouflage unlocks at weapon proficiency level 26 and 27.
Autumn - Printed leaves pattern. This camouflage unlocks at weapon proficiency level 29 and 30.
Gold - Similar to Gold camouflage from previous games, but covers every surface of weapons. This camouflage unlocks at weapon proficiency level 31.
Camouflage in Black Ops II is unlocked by completing sets of challenges for that weapon. In addition, camouflages can now be applied to secondary weapons, including the Combat Knife. This is the first Call of Duty with DLC camouflage which could be purchased in the in-game store.
Camouflage is also available in the campaign, available for any type of weapon that supports camouflage.
In early Call of Duty: Modern Warfare 2 development stages, the Call Of Duty 4: Modern Warfare woodland camouflage was used instead of the current one. This can be found within the game files as the "bushdweller" camouflage.
On the Wii version of Call of Duty: Black Ops, weapon camouflages only appear on the first-person model of the weapon, while the third-person model will have the default skin. This is due to the Wii's graphical limitations.
In local play, camouflages are unavailable. Unlockable ones can be seen locked, but the challenges to unlock them are unavailable, while downloadable content camouflages are simply not available in local play.