Handgun

Handguns (also known as Pistols and Side Arms) are a type of secondary weapon in the Call of Duty series. Handguns are usually weak with low recoil, and magazine capacities of typically 8 to 15 rounds; however there are also much stronger handguns which are louder and have more recoil and a smaller magazine capacity of 6-7 rounds. Compared to other weapons they have the fastest draw time, so it may be faster to switch to the handgun than to reload (at least if not using Sleight of Hand). When aiming down the sights they have the fastest ADS time, have no zoom, and they retain full "look/aim" movement speed when doing so.

Call of Duty and Call of Duty: United Offensive

 * M1911
 * Luger
 * TT33 (United Offensive only)
 * Webley (United Offensive only)

Call of Duty 2

 * M1911
 * Luger
 * Webley
 * TT33

Call of Duty 3

 * Colt .45
 * Walther P38

Call of Duty 4: Modern Warfare and Call of Duty: Modern Warfare: Reflex Edition

 * M9
 * USP.45
 * M1911
 * Desert Eagle

Call of Duty 4: Modern Warfare (Nintendo DS)

 * M9

Call of Duty: World at War

 * M1911
 * Nambu
 * Walther P38
 * Tokarev TT-33
 * .357 Magnum

Call of Duty: World at War (Nintendo DS)

 * M1911
 * Webley
 * Luger
 * Nambu
 * Tokarev TT-33

Call of Duty: Modern Warfare 2

 * USP.45
 * .44 Magnum
 * M9
 * Desert Eagle
 * M1911

Call of Duty: Modern Warfare: Mobilized

 * USP.45
 * M9

Call of Duty: Black Ops

 * M1911 .45
 * Python
 * Makarov
 * ASP
 * CZ75

Call of Duty: Modern Warfare 3

 * FN Five-seveN
 * P99
 * USP .45
 * MP412
 * .44 Magnum

Trivia

 * Tactical Knife kills do not count towards the prestige challenges, but they do count for the marksman challenges.
 * Call of Duty 4: Modern Warfare, Call of Duty: Modern Warfare 2, and Call of Duty: Black Ops are the only games where handguns have available attachments.
 * There are not any sidearms in Call of Duty: World at War: Final Fronts.