CSI: Crime Scene Investigation

Glock 17

Gil Grissom (William L. Petersen), Catherine Willows (Marg Helgenberger, Sofia Curtis (Louis Lombardo), and Sara Sidle (Jorja Fox) all carry Glock 17 and Glock 26 pistols as their personal sidearms. While Catherine and Sara occasionally draw their guns, Grissom is far more hesitant - his last seen use of his weapon is at the end of the fourth-season episode "All For Our Country" on a firing range.

Smith & Wesson SW99

Nick Stokes (George Eads) uses a Smith & Wesson SW99 with a nickel-plated slide. It's most prominent showing is in the Season 5 finale "Grave Danger" when the gun is tossed in with Nick before he is buried alive in a Plexiglass coffin. Midway through the episode, having discovered that his built-in air supply is threatened by a light inside the coffin (which comes on whenever his colleagues activate a website and webcam that allows them to view his plight), Nick stuffs his ears with gum and then shoots out the light, giving Warrick Brown (Gary Dourdan) a scare.

Smith & Wesson M5906

Warrick Brown and Nick Stokes carried a Smith Wesson M5906 in 9mm with adjustable sites through seasons 1-4. In season 5 Nick changes to his SW99 Nickle plated slide and Warrick Brown Changes to a Smith Wesson M5906 with Novak sites. In Season 8 episode "For Gedda" Warrick is once again seen useing a Smith Wesson M5906 with adjustable sites when being framed for killing a mob boss.

Sig P232

Sofia Curtis and Catherine Willows are seen carrying these guns through season 4-8. While Sofia is only seen carrying one of these during the shootout in "A bullet runs thorough it part 1" Catherine is seen weilding it in every season since season 4.

Sig P228

Capt. Jim Brass carries a Sig P228 in 9mm from season 3-8. Before carrying the Sig P228, he is seen useing a HK USP in season 1&2.

H&K MP5K

In the bank robbery in - "Inside the Box" (Season 3, Episode 23) a bank robber has an MP5K with a sling during a daring daytime heist.

Olympic Arms OA-93

Two of the bank robbers from the episode "Inside the Box" (Season 3, Episode 23) are armed with short AR-15 Pistols. The upper receivers seem to be the Olympic Arms OA-93, but the lower receivers have a short buffer tube, which is not necessary on the OA-93 design since the top receiver and foregrip include the innovative spring system that doesn't require a buffer tube and spring to operate the bolt carrier. Since the guns never fire in the episode, one can assume that a prop armorer assembled these pistols up from different guns.