Lt. Carter Shaw (Dylan McDermott) switches his SIG-Sauer P228 to a customized Colt MK IV Series 80 halfway into the first series. The same pistol is also used by Jimmy (Cole Hauser) in the series Chase and also by Detective Ludlow (Keanu Reeves) in the film Street Kings. Before the particular gun becomes Shaw's sidearm in the series, an unknown thug working for Howard (Al Sapienza) can briefly be seen with it, before being gunned down by Curtis in episode "Purity" (S01E03). Ty Curtis (Omari Hardwick) also uses Shaw's Colt briefly in episode "Shell Game" (S02E08).
Kahr K9
After the pilot, Jaimie Allen (Nicki Aycox) starts carrying a Kahr K9 pistol as her sidearm. She carries it throughout the first series. In episode "Jane Wayne" (S02E06) a thug named Lil Ant (Brock Lumarque) disarms Officer Allen of her Kahr and fires it at her teammates (although, unsuccessfully).
SIG-Sauer P226
FBI agents Hollis (Kyle Secor) and Boyle (José Zuñiga) use SIG-Sauer P226s as their sidearms in the pilot episode. Ty Curtis (Omari Hardwick) and Dean Bendis (Logan Marshall-Green) (from the second episode onwards) also use SIG-Sauer P226s as their sidearms (though Bendis later trades his P226 for a Heckler & Koch USP in S01E08). In episode "Ice" (S01E06) Dan Kemp (Michael Bowen) has a SIG-Sauer P226 as his sidearm. In episode "Betsy" (S01E09), a SIG-Sauer P226 can be seen in the midst of the guns in the hotel room. Dean Bendis uses a SIG-Sauer P226 again in episode "Personal Effects" (S02E10), as he is working undercover. Danny Perry (Johnny Messner) later takes the P226 from Bendis and uses it to shoot Ty Curtis (Omari Hardwick) in the same episode.
SIG-Sauer P226 (nickel)
A random criminal can be seen "mexican-carrying" nickel plated SIG-Sauer P226 in episode "Jane Wayne" (S02E06). A drive-by gangster also uses a P226 in the same episode. A gangster working for Walter Shell (Charles S. Dutton) has a nickel SIG-Sauer P226 in episode "Shell Game" (S02E08). Josh (Cory Hardrict) later takes the gun, to be fired upon by Dean Bendis (Logan Marshall-Green) to pop off the squibs under his shirt.
SIG Sauer P226 ("Non Gun")
In episode "Shelter of the Beast" (S02E03) Dean Bendis' (Logan Marshall-Green) Heckler & Koch USP briefly turns into a Non Gun SIG-Sauer as he fires his gun into the air to scare off a hitman.
SIG-Sauer P228
Carter Shaw (Dylan McDermott) uses a SIG-Sauer P228 as his sidearm through the first half of the first series. He then switches to a customized Colt MK IV Series 80. Jaimie Allen (Nicki Aycox) briefly handles a SIG-Sauer P228 as he is trying to sting a low-level gun deal in episode "Brother's Keeper" (S02E05). One of Maxwell Vasek's (Nicholas Guilak) bodyguards keeps a SIG-Sauer P228 as his sidearm in episode "Dead Flowers" (S02E09).
SIG-Sauer P239
FBI Special Agent Alex Rice (Tricia Helfer) takes a SIG-Sauer P239 out of a drawer in episode "High Rollers" (S02E04), as he prepares to meet Billy Hoffman (Rick Hoffman) during a sting operation.
Colt Government Model
Ty Curtis (Omari Hardwick) keeps a nickel plated Colt Government Model pistol in a safe box, alongside a Beretta 92FS. He takes it out and uses it in the pilot episode after Lt. Shaw (Dylan McDermott) sends him back undercover. Jack Walsh (Clayne Crawford) also keeps an M1911A1 as his sidearm in episode "K-Town" (S01E04). He is only briefly seen firing it at Curtis, but he is quickly disarmed by Dean Bendis. His 1911 seems to be fitted with either Novak or Bomar sights. Lt. Jay Frye (Michael Biehn) also uses a customized M1911A1 as his sidearm in the episode "O.I.S" (S01E07). His 1911 is fitted with Novak sights. A thug working for a smuggler named Frank (Jamie McShane), also briefly handles a regular M1911A1 in the beginning of episode "Betsy" (S01E09). One is also seen in the same episode amidst the guns that Shaw is using as bait. In episode "Brother's Keeper" (S02E05), Kyle Erikson (John Pyper-Ferguson) is seen with an M1911A1 in a promo picture for his militia. In the same episode, Carter Shaw (Dylan McDermott) briefly handles an M1911A1 with wood grips, as he lays it on a table. Danny (Johnny Messner) also uses a customized M1911A1 in episode "Dead Flowers" (S02E09). The gun is similar to what Lt. Frye and Jack Walsh used on the show, and might be the same prop on all occasions.
Colt Government Model (stainless)
Militia leader Kyle Erikson (John Pyper-Ferguson) uses a stainless M1911A1 as his sidearm in Brother's Keeper" (S02E05).
Custom Engraved M1911A1
Carter Shaw (Dylan McDermott) presents Danny Perry (Johnny Messner) with a customized nickel plated and engraved M1911A1 in episode "Personal Effects" (S02E10). As Shaw picks it up and gives it to Danny, his brother Nick (Seamus Dever) takes it from him, but soon gives it back.
Beretta 92FS
Ty Curtis has a Beretta 92FS in a safe box alongside his Colt Government Model in the pilot episode. The Beretta 92FS is also used by a guard and one of Warren Volk's men in the bank during the pilot episode. Dean Bendis (Logan Marshall-Green) also keeps a Beretta 92FS in a locked box along with his drugs and cash hidden under his floor boards. He sometimes uses the Beretta when he's undercover, as he can't use his duty gun. A Korean gangster, Kang (Brian Tee) also uses a Beretta 92FS in episode "K-Town" (S01E04). A Korean thug is also seen firing a 92FS in the same episode. A couple of thugs working for Dante Rollings (Gbenga Akinnagbe) are also seen with Berettas in episode "August" (S01E05). Officer Noyce (John T. Woods) and Officer Kim (Yun Choi) of Lt. Frye's (Michael Biehn) rogue task force also carry the Beretta 92FS as their sidearms in episode "O.I.S" (S01E07). A Beretta is also seen lying on a table in a drub lab in the same aforementioned episode. In episode Venice Kings (S01E08), Pike (Matt Bushell) and leader of the Venice Kings Mike O'Neill (Shawn Doyle) both carry Beretta 92FSs. In Betsy (S01E09), Frank (Jamie McShane) also carries a Beretta. In the same episode, a Beretta can also be seen in the midst of the guns that Shaw is using as bait. In episode "Urban Garden" (S02E01), a thug working for Serbian gangster Victor (Rhys Coiro) tries to pull a Beretta 92FS on Lt. Carter Shaw, but is quickly gunned down by Dean Bendis. In episode "Liar's Poker" (S02E02), two hitmen working for Raphael Garza (Jose Pablo Cantillo) use Beretta 92FSs as their guns of choice. A thug working for Raphael Garza pulls a Beretta 92FS during a 'friendly' stand off between Garza and Curtis in episode "Shelter of the Beast" (S02E03). In the same episode, a thug working for another drug dealer tries to use a Beretta during a bust, but is shot down quickly. In episode "High Rollers" (S02E04), Tim Rowe (Max Martini) uses a Beretta 92FS to fire at Shaw and his team after injuring Billy Hoffman (Rick Hoffman). In "Brother's Keeper" (S02E05), Ty Curtis goes undercover as a prison guard truck driver, and has a Beretta 92FS as his appointed sidearm. Dean Bendis later takes the gun from Curtis, and gives it to Carter Shae, who uses it for a good proportion of the episode. Dean also uses his personal Beretta during this episode, as he is undercover and can't uses duty gun. Militia man Kyle Erikson (John Pyper-Ferguson) later confiscates the Beretta from Shaw in his hideout. In the aforementioned episode, several deputies, security guards and a police officer can also be seen with Beretta 92FS pistols as their sidearms. Glenn Fischer (Erik Ladin) also briefly flashes a Beretta tucked in his pants in the same episode. In episode "Jayne Wayne" (S02E06), a couple of Cahill's (Dean Norris) accomplices are seen with Beretta pistols. Several police officers can be seen with Beretta 92FS pistols during the episode "Shell Game" (S02E08).
Flashpaper Beretta ("Non Gun")
In episode "Liar's Poker" (S02E02), one of the hitmen working for Raphael Garza (Jose Pablo Cantillo) uses a Non Gun Beretta to kill Michael Dupree (Keith Robinson) at point blank range. Non Guns are electronically-operated and discharge small explosive squibs that make a flash and produce smoke, but they do not eject shell casings or have any moving parts besides the trigger. Since the close proximity of the actors deems blanks unsafe, a Non Gun was used. The gun changes into a real Beretta after this scene.
Beretta 92FS Inox
A member of the Korean mafia uses a Beretta 92FS Inox as his sidearm in the episode "K-Town" (S01E04). He is seen assembling it in the beginning, in a race against Dean Bendis (Logan Marshall-Green). He uses it later to try to shoot Dean. Neal Erikso (Blake Shields) takes a Beretta 92FS Inox from a police officer in episode "Brother's Keeper" (S02E05), and uses it as his sidearm for the remainder of the episode. Carter Shaw later takes the Beretta away from him, and uses it on Neal's brother. A gangster, June Bug (Dante Basco) also uses a Beretta 92FS Inox in the episode "Jane Wayne" (S02E06). Pete (Noel Fisher) has a Beretta 92FS Inox fitted with ivory grips in the same episode. He flashes it off to Dean Bendis (Logan Marshall-Green), who takes it from him 'for his own safety'.
Taurus PT92AFS
A hitman working for a drug dealer named Xavier uses a Taurus PT92AFS to try and assassinate a Edwin Finn (Peter Lewis) in the episode "Shelter of the Beast" (S02E03).
Taurus PT99
A thug working for Maxwell Vasek (Nicholas Guilak) carries a Taurus PT99, identifiable by the raised rear sights, as his sidearm in the beginning of episode "Dead Flowers" (S02E09).
Robert Franzine (James Russo) carries as his sidearm in the pilot episode a Ruger KP90. He uses it most notably in the bank "robbery" during the pilot episode.
Ruger KP89
Johnny Moosa (Gonzalo Menendez) carries a Ruger KP89 as his sidearm in the second episode. He uses it to threaten Ty. A gangster uses a Ruger P89 during a drive-by shooting in episode "Jane Wayne" (S02E06). One of Cahill's (Dean Norris) guys also uses a P89 in the same episode. A low-level criminal Franco (Michael Ray Escamilla) also has a Ruger P89 as his sidearm in the episode "Home Sweet Home" (S02E07).
Ruger KP95
A criminal can briefly be seen firing a Ruger KP95 at Carter Shaw and Ty Curtis in episode "Personal Effects" (S02E10).
Glock 17
Jaimie Allen (Nicki Aycox) carries a two-tone Glock 17 as her sidearm only in the pilot, and can be seen using it in the gun range, and also during the climax shootout of the pilot. Her Glock switches into a Kahr 9 after the pilot, and remains her sidearm for the rest of the series.
In the pilot episode, some of Warren Volk's and Robert Franzine's men carry regular Glock 17s. In episode "Ice" (S01E06) Tommy Franco (Jonathan LaPaglia) keeps a Glock 17 in his safe. Also one of Dan Kemp's (Michael Bowen) heist crew keeps a Glock 17 as his sidearm in the same episode. In "Brother's Keeper" (S02E05), militia criminal Kenny Cobb (Lee Burns) takes out a Glock 17 from a container in his trailer. A security guard working at the federal building also pulls a Glock 17 in the aforementioned episode, during an assassination attempt on a federal judge.
Glock 19
In episode "Ice" (S01E06) Joey Becker (Kwame Patterson) pulls out a Glock 19 on Dean Bendis (Logan Marshall-Green).
Officer Chavez (Jon Huertas) of Lt. Frye's (Michael Biehn) task force, has a Glock 19 as his sidearm in episode "O.I.S" (S01E07). In the season finale of the first season (episode "A Shot in the Dark"), corrupt undercover DEA agent Steve Fuller (Victor Browne) uses a Glock 19 to fire at Dean Bendis during the beginning deal. FBI Special Agent Alex Rice (Tricia Helfer) carries the Glock 19 as her sidearm throughout the second series. Phil Doyle (Jack Stehlin), a hitman working for the Serbian gangster Victor (Rhys Coiro) also uses a Glock 19 in episode "Urban Garden" (S02E01). He wields it both suppressed and unsuppressed. In episode "Liar's Poker" (S02E02), one of Curtis' old contacts, Terry 'Teke' Kerns (Robbie Jones) pulls a Glock 19 on him during a fake deal. Fuentes (Robert Vazquez), one of Raphael Garza's henchmen pulls a Glock 19 during a stand off in episode "Shelter of the Beast" (S02E03). A drug dealer pulls a Glock 19 in episode "Shell Game" (S02E08). Maxwell Vasek (Nicholas Guilak) also uses a Glock 19 as his sidearm in the beginning of episode "Dead Flowers" (S02E09). Carter Shaw later disarms him of the Glock. There's also a continuity error in the scene, as the Glock turns into a Glock Non Gun after Vasek points it at Carter. Nick Perry (Seamus Dever) uses a Glock 19 in episode "Personal Effects" to question a russian mobster.
Flashpaper Glock ("Non Gun")
In episode "Dead Flowers" (S02E09), Maxwell Vasek's (Nicholas Guilak) Glock 19 turns into a Non Gun Glock in a continuity error. Non Guns are electronically-operated and discharge small explosive squibs that make a flash and produce smoke, but they do not eject shell casings or have any moving parts besides the trigger. Since the close proximity of the actors deems blanks unsafe, a Non Gun was used.
Glock 21
In episode "O.I.S" (S01E07) Ty Curtis exceptionally has a Glock 21 as his sidearm, as he is trying to infiltrate a task force, led by Lt. Jay Frye (Michael Biehn). This involves him going back to work as a plain clothes officer. Apparently the Glock 21 was Curtis' duty weapon.
Glock 26
A Korean gangster, Kang (Brian Tee) is briefly seen loading up a Glock 26 in episode "K-Town" (S01E04).
Ty Curtis (Omari Hardwick) uses a Heckler & Koch USP to arrest Johnny Moosa when they are in Ty's house in the second episode ("Guns, Strippers and Wives"). Dean Bendis (Logan Marshall-Green) starts carrying the USP as his sidearm beginning in S01E08, and uses it for the remainder of the show. A USP can also be seen in the midst of the guns Shaw is using as bait in episode "Betsy (S01E09).
Raphael Garza (Jose Pablo Cantillo) uses a Heckler & Koch USP with a stainless slide as his chief sidearm in episode "Shelter of the Beast" (S02E03).
Heckler & Koch USP Compact
Jaimie Allen (Nicki Aycox) briefly wields a Heckler & Koch USP Compact during a setup drug deal in episode "Guns, Strippers and Wives" (S01E02). A thug working for Howard (Al Sapienza) pulls a Heckler & Koch USP Compact when Howard orders him to kill Reuben Pike in episode "Purity" (S01E03). He is gunned down before he gets a chance, though.
In episode 2 ("Guns, Strippers and Wives"), Jimmy Boyd (Gregg Henry) is briefly seen putting a Smith & Wesson 4506 to the head of Ty. The particular 4506 used in this episode is the exact same one used by Keanu Reeves in the 2008 film Street Kings (same armorer, same prop). A pair of snake eyes dice with "Vice Special" is printed on the right side of the slide between the ejection port and the muzzle. The same prop is also re-used in episode "August" (S01E05), as Dante Rollings' (Gbenga Akennagbe) sidearm. Shaw eventually takes the gun away from Dante, and points it at him. In episode "Home Sweet Home" (S02E07) Jack Sutton (Currie Graham) uses a Smith & Wesson 4506 throughout the episode. However, close inspection of the gun reveals that it lacks the custom slide, so it is a different prop. Nick Perry (Seamus Dever) offers Dean Bendis a Smith & Wesson 4506 "with an HK suppressor" in episode "Dead Flowers" (S02E09) to kill his brother Danny (Johnny Messner). Nick later uses the 4506 again in "Personal Effects", pulling it on Dean Bendis (Logan Marshall-Green) near the end of the episode.
Smith & Wesson 5904
A Korean gangster puts a Smith & Wesson 5904 on Ty's throat in episode "K-Town" (S01E04), when Dean Bendis is accused of cheating by one of the Koreans.
Smith & Wesson 5906
A Korean gansgter Kang (Brian Tee) briefly loads a Smith & Wesson 5906 in episode "K-Town" (S01E04). A thug, Hunchy (Giovanni Lopez), working for a drug dealer also uses a Smith & Wesson 5906 pistol in episode "Shelter of the Beast" (S02E03). Dean Bendis (Logan Marshall-Green) handles one in episode "Brother's Keeper" (S02E05), as it is given to him by Kenny Cobb (Lee Burns) to get rid of the nozy cops.
Rohrbaugh R9
Ty Curtis pulls a Rohrbaugh R9 in episode "Purity" (S01E03). He uses it to dispatch an enemy.
Revolvers
Smith & Wesson 640 Centennial
A drug buyer tries to pull a Smith & Wesson Model 640 Centennial on Shaw in the second episode, when they are trying to come up with a 100 grand to save Ty.
Smith & Wesson Model 36
A Smith & Wesson Model 36 snub-nose revolver can be seen Reuben Pike's trunk in the episode Purity (S01E03). Dean Bendis (Logan Marshall-Green) and Jaimie Allen (Nicki Aycox) plant this gun, and some coke, in Pike's trunk to make sure he will be co-operative. Ty Curtis (Omari Hardwick) also uses one as his back up rod in episode "Shelter of the Beast" (S02E03), and uses it to dispatch a criminal. Curtis has the same revolver a safebox in his apartment in episode "High Rollers" (S02E04). Dean Bendis also uses a Smith & Wesson Model 36 in episode "Dead Flowers" (S02E09), briefly showing it to Nick Perry (Seamus Dever).
Colt Detective Special
In episode "Ice" (S01E06), Dan Kemp (Michael Bowen) gives one his heist crew a nickel plated Colt Detective Special, saying that if he wants out, he has to play Russian roulette.
Smith & Wesson 66 "Non Gun"
Dean Bendis (Logan Marshall-Green) uses a Non Gun Revolver in episode "A Shot in the Dark" (S01E10), as he plants two .38 bullets at a crime scene. Non Guns are used when real, blank-firing guns are not necessary.
Taurus Model 85
In episode "Urban Garden" (S02E01), Dean Bendis pulls out a Taurus Model 85 revolver, as he's working undercover in a fast food restaurant.
Astra Terminator
David Lantz (Eric Lange) uses an Astra Terminator as his sidearm in the episode ""Home Sweet Home" (S02E07). He later gives the gun to Ty Curtis (Omari Hardwick) to dispose of a suspected snitch.
Unknown snub-nosed revolvers
In the pilot episode, one of Warren Volk's bodyguards has an unknown snub-nosed revolver in an ankle holster. He tries to use it but is gunned down by one of Franzine's crew members. Lt. Frye (Michael Biehn) is also briefly seen planting a snub nose revolver into the hands of a dead drug dealer in episode "O.I.S." (S01E07). In "Brother's Keeper" (S02E05), a woman tries to assassinate a federal judge with a compact snub-nosed revolver.
Sub-machine guns
Heckler & Koch MP5A2
In the second episode when Ty is undercover he is trying to buy guns from Johnny Moosa. Among other weapons there are Heckler & Koch MP5A2s. Moosa also tests one of the MP5's, which is fitted with a holographic sight. A thug from Moosa's crew also tries to use an MP5A2 during the trade in episode 2, but Dean intervenes.
Heckler & Koch MP5A3
A couple of SWAT officers load up their Heckler & Koch MP5A3 submachine guns before a raid in episode "Venice Kings" (S01E08). A hitman fires a Heckler & Koch MP5A3 during a drive-by shootout in episode "Personal Effects" (S02E10).
In episode "Brother's Keeper" (S02E05), Carter Shaw (Dylan McDermott) takes an IMI Uzi out of a gun bag, intending to sell it and a bunch of other guns. Earlier in the episode this gun was the more compact variant, IMI Mini Uzi. The gun turns into an Uzi in this scene.
Machine pistols
Cobray M11/9
In episode "Venice Kings" (S01E08), a Lokes hit team uses a Cobray M11/9 in a drive-by hit attempt on Venice Kings members. In episode "Brother's Keeper" (S02E05), a militia man named Len tries to pull out a Cobray M11/9 to assassinate a federal judge. A gagster uses a Cobray M11/9 during a drive-by shooting in episode "Jane Wayne" (S02E06). A couple of gangstas uses Cobrays in episode "Shell Game" (S02E08). After Dean and Carter disarm the thugs, Dean picks up the machine pistols.
IMI Mini Uzi
A IMI Mini Uzi can be seen in a gun bag, that Alex Rice (Tricia Helfer) intends to use to create some intrest by a gun dealer/militia man in episode "Brother's Keeper" (S02E05).
Rifles
Colt M4A1 Carbine
Most of Robert Franzine's (James Russo) men use M4A1 carbines in the pilot episode, including undercover Officer Dean Bendis (Logan Marshall-Green). They most notably use them during the bank job, and the ensuing shootout. A couple of M4A1s are also seen in episode 2, "Guns, Strippers, Wives": First in the container when Ty Curtis (Omari Hardwick) checks Johnny Moosa's merchandise, and later in the back of a van during the trade off.
Colt M4A1 Carbine (flat-top)
One of Neal's (David Fabrizio) men uses a flattop M4A1 with a flip-up adjustable rear sight in episode "O.I.S." (S01E07). Jaimie Allen (Nicki Aycox) also handles a flattop M4A1 in "Betsy", as Shaw and her are preparing a fake smuggling deal.
SVD Dragunov
Amidst the weapons that Carter Shaw (Dylan McDermott) uses to fake a transportation deal in S01E09, is a SVD Dragunov. He briefly handles it, as he shows off the gun.
M16A1 (with A2 handguards)
Several M16A1 rifles fitted with M16A2 handguards can be seen in a container in episode nine ("Betsy"), as Dean Bendis (Logan Marshall-Green) is packing the container.
AKM
In "Brother's Keeper" (S02E05), Kenny Cobb (Lee Burns) uses an AKM rifle in the beginning of the episode. Later on in the episode, a thug working for militia leader Kyle Erikson (John Pyper-Ferguson) uses an AKM to hold Carter Shaw (Dylan McDermott) at gunpoint. Kyle Erikson is also briefly seen holding one in a photo in the aforementioned episode.
AKM (with side-folding stock)
Dean Bendis (Logan Marshall-Green) briefly handles an AKM rifle fitted with a side-folding stock in episode "Betsy" (S01E09).
Shotguns
Remington 870
Lieutenant Carter Shaw (Dylan McDermott) uses a Remington 870 shotgun with synthetic furniture, rear pistol grip and extended barrel in the pilot episode shootout near the end. Pike (Matt Bushell) also uses a one in episode Venice Kings (S01E08). His shotgun is also fitted with a heat shield.
One of Robert Franzine's (James Russo) men is seen loading a black Remington 870 when they prepare for the bank job in the pilot episode. Dean Bendis (Logan Marshall-Green) is also seen with one in episode "Ice" (S01E06) as he robs a couple of robbers of their own stuff. Officer Kim (Yun Choi) is also briefly seen with one, when Lt. Frye's rogue task force is outside Dean Bendis' apartment in episode "O.I.S." (S01E07). Dean Bendis again uses one in the episode "Brother's Keeper" (S02E05), to bust out Shaw and a couple of fugitives out of jail. Ty Curtis (Omari Hardwick) also uses a Remington 870 with synthetic furniture in episode "Dead Flowers" (S02E09), as he and Carter 'kidnap' Dean and a criminal. Danny Perry (Johnny Messner) also uses a Remington 870 shotgun with black furniture during the finale of the second season ("Personal Effects").
During an attack on the Serbian gangster Victor's (Rhys Coiro) hideout in episode "Urban Garden" (S02E01), Ty Curtis (Omari Harwick) uses a Remington 870 shotgun with an extended magazine tube, a breacher barrel and a rear pistol grip. Carter Shaw (Dylan McDermott) also uses this particular shotgun in episode "Shelter of the Beast" (S02E03). He uses it to smash the window of Raphael Garza's (Jose Pablo Cantillo) Mercedez. Carter later uses this same shotgun again in episdoe "Dead Flowers" (S02E09) to 'kidnap' Dean and a criminal.
David Lantz' (Eric Lange) accomplice Cousin Red (Charles Halford) also uses a Remington 870 shotgun fitted with a pistol grip in episode "Home Sweet Home" (S02E07).
When Dean Bendis (Logan Marshall-Green) tries to set up an ecstasy deal while he's undercover in episode "Urban Garden" (S02E01), undercover FBI agent Bill Pierce (Sean Donnellan) pulls a regular Remington 870 shotgun on him.
Remington 870 Police
Lt. Carter Shaw and Dean Bendis also use tactical Remington 870 Police shotguns fitted dedicated Surefire forend weaponlights whenever they need to make a bust. Officer Allen (Nicki Aycox) is also briefly seen loading one of these Remingtons in episode "K-Town" (S01E04). Ty Curtis (Omari Hardwick) also uses one in episode "Urban Garden" (S02E01), while he's standing by as back up with Jaimie Allen for FBI agent Alex Rice (Tricia Helfer). Undercover FBI agent Bill Pierce (Sean Donnellan) also loads and handles a tactical Remington 870 Police in the same episode, during the bust near the end of the episode. Alex Rice also uses a Remington 870 Police shotgun in the episode "Brother's Keeper" (S02E05).
Benelli M1 Series Super 90
A Benelli M1 Series Super 90 is carried and used by one of Lt. Shaw's acquaintance's Neal's (David Fabrizio) men in the episode "O.I.S." (S01E07) during the raid on the drug lab. It is seen fitted with a Surefire tactical light.
Ithaca 37
In episode "O.I.S." (S01E07) Lt. Shaw's (Dylan McDermott) acquintance, Neal (David Fabrizio) uses an Ithaca 37 shotgun when they destroy a drug dealer's lab together.
Mossberg 590 Cruiser
One of Cahill's (Dean Norris) men uses a Mossberg 590 Cruiser shotgun fitted with an extended mag tube, ghost ring sights and a saddle shell holder as his primary firearm in the episode "Jane Wayne" (S02E06). Jaimie Allen (Nicki Aycox) uses the shotgun in the same episode after dispatching Cahill's thug.
Machine guns
Browning M1919
In episode "Betsy" (S01E09), a Browning M1919 machine gun can be seen in the midst of the guns Carter Shaw (Dylan McDermott) is using as bait.
M60
An M60 machine gun can be seen amidst the guns in episode "Betsy" (S01E09), that Carter Shaw is using as bait.