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An armed and masked gunman in "Vamos" (S4E01) is seen with a Beretta 92FS. Marlon Higgins (Patrick Mark) opens fire with a 92FS at Annie in "Space (I Believe in)" (S4E06). A United State Air Force airman is armed with a Beretta 92FS in his right leg holster in "Dead".
Calder Michaels (Hill Harper) uses a Beretta 92FS Inox pistol as his main sidearm, first in the opening of "Vamos" (S4E01) and when killing a cartel hitman in Colombia later in the episode. One is used with a suppressor by the said hitman in the same episode. One is used by an armed man in "Crackity Jones" (S4E07).
An airgun version of the Beretta Px4 Storm is used by Annie when she gets back to America covertly, first seen in "No. 13 Baby" (S4E13). Henry Wilcox (Gregory Itzin) an actual Beretta Px4 Storm with a mounted suppressor in the same episode.
Annie Walker (Piper Perabo) uses a chrome Ekol Aras Magnum (a blank firing replica of the Browning BDM) to kill Calder Michaels, the CIA Station Chief of Medellin, Colombia in "Vamos" (S4E01).
A Glock 17 is used by a Stavros henchman in Vienna in "Here Comes Your Man" (S4E05). Teo uses it in the same episode after he disarms the same henchman of his sidearm. A Politi officer uses a Glock 17 in Denmark to engage a fleeing Annie and Teo in "Hang Wire" (S4E09). An armed man in Geneva chases after Annie with a Glock 17 in the middle of "Something Against You" (S4E12). Annie uses one briefly before being disarmed in "River Euphrates" (S4E14). Lexington security guards in Hong Kong use them as their main sidearm when confronted by CIA SOG teams sent in by Braithwaite in "Trompe Le Monde" (S4E16). FBI agent Vincent Rossabi uses one possibly as his main sidearm throughout the season.
A Glock 19 is used by Nelson Smith (Jonathan Togo) in the middle of "River Eupharates" (S4E14). One is used in "Trompe Le Monde" (S4E16) by Annie to take out a Ministry of State Security agent by knocking him out cold.
In "Hang Wire" (S4E09), Annie uses a Walther PPK in Denmark after it was given to her back in America by Joan and Arthur via bag. Sana Wilcox (Seeta Indrani) uses one near the end of "Dead" while Annie uses her PPK to shoot Deric Hughes.
A majority of CIA SOG operators in a black ops mission in Colombia are armed with Heckler & Koch MP5A3s with Surefire tactical lights in "Into the White" (S4E03). They are also seen with CIA guards protecting a CIA black ops detention center in "I've Been Waiting for You" (S4E08).
Heckler & Koch MP5A3 with Surefire 628 dedicated forend weaponlight and safe-semi-two round burst trigger group - 9x19mmError creating thumbnail: File missingCIA SOG operators walk somewhere in a Colombian forest with MP5A3s. (S4E03)Error creating thumbnail: File missingA CIA SOG operator covers the retreat of his comrades. Note the Surefire tactical light underneath the barrel. (S4E03)Error creating thumbnail: File missingA CIA black ops guard on sentry duty. (S4E08)
Heckler & Koch MP5K
Heckler & Koch MP5Ks are used by Lexington security guards in Kowloon in the middle of "Trompe Le Monde" (S4E16).
Deric Hughes (Aidan Devine), one of Henry Wilcox's moles in the CIA, uses a FIM-43 Redeye MANPAD to stage a false flag terrorist attack near the end of "Hang Wire" (S4E09). This was incorrectly referred to as the "FIM-92 Stinger".