TRIVIA: There were only two H&K USP Compacts used by Kiefer Sutherland through the entire run of the series. This was because Kiefer is a method actor and did not like to change props. He only wore 3 real kevlar bullet proof vests through out all 8 seasons. (IMFDB thanks The Golden Closet for providing the documentation on this gun.)
Smith & Wesson 4006
CTU Agent Chase Edmunds (James Badge Dale) carries the Smith & Wesson 4006 as his main sidearm throughout the season. It is sometimes fitted with a silencer.
I dunno, this really doesn't look like a compact 4006, more like a full-size 5906 to me.--Pølaris 19:03, 22 May 2010 (UTC)
I've heard it refered to by everything. About the only thing people can agree on is it is a third gen S&W automatic. Personally I think its a 4516.
Beretta 92FS Inox
Tony Almeida (Carlos Bernard) uses a Beretta 92FS Inox in episode 22 during the exchange for Saunders daughter and Michelle.
Glock 19
CTU Agent Michelle Dessler (Reiko Aylesworth) is seen using a Glock 19 in the Chandler Plaza Hotel. A Salazar henchman is also seen with one until Chase takes it away during a scene in Mexico. Nina Myers (Sarah Clarke) uses one after she escapes inside CTU, just before Jack kills her.
Beretta 92FS
Used by LAPD officers, Jack Bauer in Mexico and to kill Nina Myers, Ramon Salazar, and many of the Salazar henchmen. An assailant also uses one to wound Tony when he's in the shopping mall.
Unknown Sniper Rifle
Used by Chase during the gunfight between Delta 3 unit and Salazar henchmen.
R700
Smith & Wesson Model 66
Used in the Russian roulette sequence that takes place during the prison riot.
Smith & Wesson SW99
Carried by several CTU agents and Salazar henchmen throughout Season 3 including CTU Agent Baker (Daniel Dae Kim) This is the cheaper American made copy of the Walther P99, recognized by the curved trigger guard.
Glock 26
A two-tone Glock 26 is given to Kim Bauer (Elisha Cuthbert) by her father, Jack Bauer for use during an undercover mission, where she posed as Jane Saunders.
SIG-Sauer P228
Used by CTU security personnel.
Mossberg 590 Compact Cruiser
During a drug bust, one of the dealers opens fire on Jack and Chase with this weapon.
Walther PPK
Stolen out of the Hotel Security Chief's desk by an employee attempting to escape the hotel, it appears briefly in several scenes before Michelle Dessler confronts and disarms the employee. The hammer is the give away that the pistol is a PPK and not a SIG-Sauer P232, that and the general shape of the gun is radically different. A PPK was handed to Jack to "kill" Chase, but is not loaded.
If you look closer, the pistol is not a Walther PPK, but a copy. It is most likely an Erma Excam RX22 (the barrel appears to be .22) but it could also be the Iver Johnson copy as well. Nina also carries one when Jack kills her bodyguards.
Unknown Hunting Rifle
During the scene when Jack was forced to "kill" Chase, one of the Salazar henchmen is seen in the background holding a hunting rifle.
Walther P99
Used by one of Michael Amador's men in Chinatown.
Colt M1911
Hector allows his brother-in-law to fire a Colt 1911 with pearl handles.
Heckler & Koch MP5A2
Used by members of the CTU Tactical Team throughout Season 3. It's also used by Saunders' men.
Remington 870
Used by prison guards and later by Ramon during the escape from prison. Jack was also seen holding one in the first episode.
Unknown AK variants
Used by many henchmen working for Salazar and Amador.
Heckler & Koch HK91
In episode 12:00am-1:00am, two of the Salazar henchmen were seen using them fitted with scopes.
Heckler and Koch MP5K
Used by one of Michael Amador's men when they ambushed and slaughtered Delta 3 unit.
Unknown MP5
One of Amador's men is also seen with an MP5 during the ambush, but it's too dark to identify what model it is.
Unknown Assault Rifle
Another weapon used by one of Amador's men during the ambush is an unknown assault rifle judging by the star shaped muzzle flash, but it's too dark to identify what make and model it is.
M60E3
Used to pin down Jack as he chases Saunders trying to escape in chopper. Also used in the attack at the MI6 office.
Browning M2
Members of Delta 3 unit have them mounted on their HUMVEEs.
M4A1 Carbine
Used by members of the CTU Tactical Team throughout Season 3 for the first time in the series.
Smith & Wesson 4006
In episode 2:00am-3:00am a CTU guard who Nina kills has it in his holster. Kim later picks it and uses it to intimidate her.
SIG Pro
Used by the character firing on the CTU personnel during Saunders' capture.
Micro Uzi
Carried by several henchmen throughout this season.
Used by Saunders' men during the MI6 HQ attack and during the exchange.
Unknown S&W
Used by Julia to kill Sherry and commit suicide.
Heckler & Koch P7
Used by the widow of CTU agent Gael Ortega to kill Saunders. Also used by Gael to intimidate Kim.
Beretta Cougar
When Michelle tries to break out from Saunders' base, she knocks out her guard with a brick and takes his Beretta Cougar, when Jack convinces her to surrender to Saunders, she throws it in the bushes.