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A full-size SIG-Sauer P320 continues to be the sidearm carried by Special Agent Kurt Weller (Sullivan Stapleton). Jane Doe (Jaimie Alexander) uses the pistol on occasion. Roman uses a P320 in a continuity error, having earlier handled a Glock 17. Dr. Robert Borden aka Nigel Thompson (Ukweli Roach) seizes Weller's sidearm at the end of "Nor I, Nigel, AKA Leg in Iron" (S2E10).
SIG-Sauer P226
The SIG-Sauer P226 appears to be used by other FBI agents on Weller's team.
SIG-Sauer P229R
A SIG-Sauer P229R is seen being used with Jane, which was handed to her by Roman in "Heroes Fear Imminent Rot" (S02E03). It appears to be used by Special Agent Tasha Zapata (Audrey Esparza) as her main sidearm.
Beretta 92FS
The Beretta 92FS is seen with various characters.
Beretta 92FS Inox
What appears to be a Beretta 92FS Inox is used in "Heave Fiery Knot" (S2E02) by a Juarez Cartel soldier.
Beretta Px4 Storm
The Beretta Px4 Storm is used by rogue CIA agent Charles Kessler (Wayne Norman) near the end of "If Beth" (S2E04).
Colt Government Model
A Colt Government Model is seen with Weller near the end of "We Fight Deaths on Thick Lone Waters" (S2E08).
Glock 17
The Glock 17 is seen with FBI agents and NYPD officers as their main sidearm. A Glock 17 is also used by Roman (Luke Mitchell) in the Season 2 premiere "In Night So Ransomed Rogue" (S2E01). Roman handles a Glock 17 in "Heroes Fear Imminent Rot" (S02E03), though a continuity error later replaces it with a SIG-Sauer P320.
Glock 19
A Glock 19 is used by Jane, first used in "Heave Fiery Knot" (S2E02) after she's activated as a FBI mole to Sandstorm. Dr. Patterson (Ashley Johnson) uses it at the end of "Why Let Cooler Pasture Deform" (S2E09).
Glock 26
A Glock 26 is used by Drug Enforcement Agency Special Agent Valentine Barker (Karishma Ahluwalia) in "Heave Fiery Knot" (S2E02). U.S. Marshall Allison Knight (Trieste Kelly Dunn) uses it as her sidearm, first seen in "Condone Untidiest Thefts" (S2E05).
A Heckler & Koch USP is seen in "We Fight Deaths on Thick Lone Waters" (S2E08).
IMI Jericho 941
What appears to be a Jericho 941 is used by corrupt DEA agent Robert Kingston (Ed Moran) in "Heave Fiery Knot" (S2E02).
IMI Uzi Pistol
An IMI Uzi Pistol appears to be used by an Irish mob assassin in "Condone Untidiest Thefts" (S2E05). Some Sandstorm mercenaries use them in "Nor I, Nigel, AKA Leg in Iron" (S2E10).
Kimber Ultra CDP II
In "Night So Ransomed Rogue" (S2E01), Jane is seen using what appears to be a subcompact Kimber handgun, most likely the Ultra CDP II.
Magnum Research Micro Eagle
A Magnum Research Micro Eagle is used by NSA agent Nas Kamal as her backup weapon in "If Beth" (S2E04).
Makarov PM
A Makarov PM is seen in a photo during a debriefing in "Heave Fiery Knot" (S2E02).
Para-Ordnance P-16
A Para-Ordnance P-16 may be seen on a video display in "Heave Fiery Knot" (S2E02).
Ruger SR9
The Ruger SR9 with a stainless steel slide is seen throughout "We Fight Deaths on Thick Lone Waters" (S2E08).
SIG-Sauer P230
A SIG-Sauer P230 is used by Meridia (Gi'onna Kamille) after she sees Kessler shot dead in "If Beth" (S2E04).
Walther PPK
A Walther PPK with a suppressor is used by ex-CIA agent Elizabeth Gubara (Karen Pittman) when cornered in "If Beth" (S2E04).
Unknown
Revolvers
Smith & Wesson Model 36
What appears to be a Smith & Wesson Model 36 with a different trigger guard is rigged to a video camera in "Condone Untidiest Thefts" (S2E05).
Submachine Guns
Heckler & Koch MP5A3
The Heckler & Koch MP5A3 is seen with some Irish mob assassins in "Condone Untidiest Thefts" (S2E05).
Heckler & Koch MP5K-PDW
A Heckler & Koch MP5K-PDW is seen with a Juarez Cartel soldier in "Heave Fiery Knot" (S2E02). One is seen, but not used with in "We Fight Deaths on Thick Lone Waters" (S2E08) with Clive.
Heckler & Koch MP7A1
A Heckler & Koch MP7A1 is used by a Sandstorm mercenary in "Nor I, Nigel, AKA Leg in Iron" (S2E10).
IMI Uzi
A few IMI Uzis are used by Irish mob assassins sent to kill Patrick O' Malley in "Condone Untidiest Thefts" (S2E05). Roman takes one from a Sandstorm mercenary in "Nor I, Nigel, AKA Leg in Iron" (S2E10).
TDI Vector
A TDI Vector is used by a Sandstorm mercenary in "Nor I, Nigel, AKA Leg in Iron" (S2E10).
Rifles/Carbines
AKS-74U
An AKS-74U is used in "Condone Untidest Thefts" (S2E05) by an Irish mob assassin.
The M4A1 is used in the season by American military and law enforcement personnel.
Colt Model 933
The Colt Model 933 is used in the season by American military and law enforcement personnel. Zapata uses one with rails attached in "We Fight Deaths on Thick Lone Waters" (S2E08).
FN SCAR-L
An FN SCAR-L is seen next to an unconscious Jane via drone surveillance footage in "In Night So Ransomeed Rogue" (S2E01) in its first appearance.
Heckler & Koch G36C
A Heckler & Koch G36C is used by a Juarez Cartel soldier in "Heave Fiery Knot" (S2E02).
Heckler & Koch HK416
Heckler & Koch HK416s outfitted with suppressors and EOTech sights are used by Sandstorm mercenaries in Bulgaria near the end of "Her Spy's Harmed" (S2E06).
Norinco Type 56-2
What appears to be a Norinco Type 56-2 outfitted with grey furniture is used by some of Marconi's men near the end of "We Fight Deaths on Thick Lone Waters" (S2E08).
SIG-Sauer 516
A SIG-Sauer 516 appears to be used in "Condone Untidiest Thefts" (S2E05) by an Irish mob assassin.
SIG P556 SWAT / SG 550 hybrid
A SIG P556 SWAT assault rifle is used by one of Marconi's men in a shootout near the end of "We Fight Deaths on Thick Lone Waters" (S2E08).
Unknown
Shotguns
Remington 870 (MCS Masterkey)
A Remington Model 870 in a MCS configuration is seen in the hands of Jane during her escape from a CIA Black Site in the Season 2 premiere "In Night So Ransomed Rogue" (S2E01).
Remington 870 Police Magnum
A Remintgton 870 Police Magnum appears to be used in "Condone Untidiest Thefts" (S2E05) by an Irish mob assassin.
Sniper Rifles
Barrett MRAD
A Barrett MRAD is secured by Roman when he places it in the turn of a car in "Heave Fiery Knot" (S2E02).
Remington Model 700
The Remington Model 700 is seen in "Condone Untidiest Thefts" (S2E05) by Kurt Weller when he was still a military academy student.
Remington 700PSS
The Remington 700PSS is used by American law enforcement personnel.
Machine Guns
2A7 autocannon
The 2A7 autocannon is seen mounted on a ZSU-23-4 in an image in "We Fight Deaths on Thick Lone Waters" (S2E08).
FN M249 Para
The FN M249 Para is used by Clive in "We Fight Deaths on Thick Lone Waters" (S2E08), according to him, to fend off Secret Service agents coming for him.
Rocket Launchers
FIM-92 Stinger
Some FIM-92 Stingers are used in an arms deal in "Heave Fiery Knot" (S2E02).
Grenades
Mini-Flashbang
A mini-flashbang is used by Gubara after she's disarmed by Jane in "If Beth" (S2E04).
Grenade Launchers
M203A1 Grenade Launcher
A M203A1 Grenade Launcher is seen in archive photo in "We Fight Deaths on Thick Lone Waters" (S2E08).
Others
Small Arms
A variety of small arms are seen in the back of a moving truck in "Heave Fiery Knot" (S2E02).
Sandstorm Armory
The Sandstrom Armory has various small arms, including AT-4 launchers.
Diner Gun Rack
A Diner has a gun rack with several shotguns and rifles in "Nor I, Nigel, AKA Leg in Iron" (S2E10).