Snipers Ed Lane (Hugh Dillon), Juliana Callaghan (Amy Jo Johnson), and Sam Braddock (David Paetkau) use Remington 700PSS rifles chambered in .308 caliber (Despite their stock slung ammo being .300 Win Mag) and they are fitted with scopes with false reticules.
Luger P08
The hostage taker in the first episode shoots a woman in the back with a Luger P08 and holds another woman at gunpoint with it before being shot by Ed Lane's sniper rifle. The man's son also uses a Luger in the fourth episode of season 2 to hold Lane up before he is killed by Braddock.
Heckler & Koch MP5A3
Sgt. Gregory Parker regularly has two or more officers armed with H&K MP5A3s with tri-rails, Navy trigger groups, and forward grips at his side. Several other officers use them as well. For some reason SRU officers feel the need to grab the magazine even though they have perfectly good vertical foregrips. They also rarely feel the need to rest stock against shoulder, as they are often seen holding the stock a good 6 inches away from their body.
Notabley used by Ed Lane and SRU in Episode 4.
Ed Lane is seen using one in Season 2, Episode 6 "The Fortress" with a Navy Trigger group, although switches to his Glock so he can carry a riot shield.
Jules and Braddock use MP5A3s during Season 2, Episode 11 "Perfect Storm".
Glock 17 second generations are the issued sidearms of the SRU team through season 1.
By the second episode "Backwards Day", Season two, many of the Glocks are now 3rd generations and are outfitted with tactical flashlights.
By the third episode "Haunting The Barn", we finally see Sgt. Parker draw his Glock. We also see Ed Lane has been outfitted with one of these Glocks.
Ed Lane uses his Glock to kill Mischa the Russian hostage taker in Episode 6 "The Fortress".
Glock 26
Juliana's sidearm at the start of Season 2 is a Glock 26. This gun was likely chosen because Amy Jo Johnson's hands were too small to hold the full sized Glock 17 so the subcompact model was selected.
In Season 2, Episode 7 "Clean Hands", Agent Delia Semple (Kari Matchett) shoots the foreign serial killer with her Glock 26.
M4A1
Several officers use M4A1 carbine assault rifles as standard-issue weapons. Juliana uses one in the second episode to watch over a father with a gun in the hospital. It is fitted with a red-dot sight but when she looks through it, it incorrectly has a sniper reticule instead. By episode seven, just about all the main officers have used M4A1s. The props weapons used are not the similar Canadian-made Diemaco C8 carbine, which would be more appropriate for a Canadian SWAT team to use, since Diemaco (now Colt Canada) does not sell its weapons to civilian companies (including the armorers who worked on the show).
Colt Commando
Several Colt Commando rifles with large muzzle breaks are seen in the police station armory in Episode 4, Season 2.
Smith & Wesson 5904
When a man becomes enraged that his daughter can't get a new heart, he draws a Smith & Wesson 5904 off a hospital guard and begins a standoff. He accidentally scores a non-fatal shot on an officer after less lethal is ordered to stop him when he reveals the safety is on, and then turns it off and hits an officer's vest.
Taurus Judge .410/.45 LC
In the 3rd episode dialogue, the Taurus Judge Kennon carried is called the "Jury", street name. "Takes 5 rounds, shotgun, single bore." Exact lines.
It is actually a Taurus Judge firing the very slim .410 shotgun round and can also accept .45 LC rounds.
Smith & Wesson 5906
In the 4th episode, a Smith & Wesson 5906 with a rounded trigger guard (yes, they can have different trigger guards and be the same model) was used by the outraged woman, Rebecca Kessfield (Chandra West).
Deftech/Federal Labs Revolving Launcher
The 6 shot 40mm Deftech rotarary grenade launcher for Law enforcement first seen in episode 4 is used by Sam Braddock (David Paetkau). Wasn't fired.
Beretta 92FS
A Beretta 92FS is used by the bank robber in episode 5, Season 1 "Who's George?". It is also used by the suicidal veteran SRU officer in episode 3, Season 2 "Haunting The Barn".
A Beretta is seen in a Russian hostage taker's car during Season 2, Episode 6 "The Fortress".
One is seen in Season 2, episode 7 "Clean Hands", used by Walter Volcek (Peter Outerbridge), the father of a victim of a serial killer to try get revenge. It should be noted that he racks the slide at least three times throughout the episode before he shoots it, and when he does it appears to fire full auto, though it might just have been full auto sound effects.
Smith & Wesson Model 36
Seen in episode 6 is a Smith & Wesson Model 36 owned by a female gang member, taken by an innocent that was bullied and used against them.
A Model 36 is used to hold a man hostage by Brian Bauman (Hugh Thompson) in Season 2, episode 5 "Business As Usual".
Unknown old fashion revolver
In episode 7. A boy took out an old revolver that according to dialogue was carried by his great-grand father and his grandfather. So we can assume it's an old piece. Maybe a Single Action Army or something like that.
Not an SAA, I don't see an ejector piece.
From the looks of the first picture, it looks to me like a S&W model 3 revolver.
This series takes place in Canada and the father says that it was taken ashore at Juno beach on D-day, so what did the Canadians use as a sidearm in WWII? Webley?
The character of the father refers to the revolver being issued to a relative who proceeded to carry it up the Chilkoot Pass during the Klondike gold rush. This was well before the landing on Juno Beach so it's not a Webley.
SIG-Sauer P226
A Russian hostage taker is seen using a SIG-Sauer P226 in Season 2, Episode 6 "The Fortress".
SIG-Sauer P228
The leader of the female gang uses a SIG-Sauer P228 in episode 6.
Federal M201-Z Grenade Launcher
The Federal M201-Z Grenade Launcher is used in Season 1, Episode 7 by Juliana. It is also seen used by Sam Braddock in "Eagle Two", Season 2, Episode 1. Again it is used by an SRU member in Season 2, Episode 2, "Backwards Day", but it was not fired.
CornerShot with Glock attachment
Seen being used by Ed Lane in episode 9 "Planets Aligned" is a CornerShot, both with an without an ACOG scope (which is rather useless on a CornerShot anyway). A Glock 17 is fitted on the end.
Remington 870
Seen in episode 9, season 1 to use as a door breaching weapon is a Remington 870 police magnum.
Seen in episode 4, season 2 in the station's armory.
Heckler & Koch G3
In season 2, episode 4, the son of the shooter in the first episode uses a Heckler & Koch G3 rifle (specific make unknown) to snipe people from city hall. Braddock can identify this rifle by simply looking at the shell casing, because the "HK G3" and other CETME variants leave stripes on the shell casings, a feature caused by the fluted chamber.
Also at the range the sniper seem to have picked would have made his scope a very bad choice, despite the zoom in the scene isn't where he is supposed to be, it's too close for the sight to see his target that clearly. He was on the roof of city hall.
IMI Desert Eagle Mark VII
An IMI Desert Eagle Mark VII chambered in .44 Magnum is used by Russian hostage taker Mischa in Season 2, episode 6 "The Fortress".
IMI Desert Eagle Mark XIX
One of the men who takes Justin Fraser's (Ryan Kennedy) wife hostage holds a chome plated IMI Desert Eagle Mark XIX .50 AE to her head in Season 2, Episode 10 "Remote Control".
In Season 2, Episode 7 "Clean Hands" Walter Volcek (Peter Outerbridge) holds a primed M67 hand grenade to keep Sam Braddock as a hostage. He is eventually subdued when a foam gun is used to keep the grenade in his hands and not go off.
Beretta 84FS "Cheetah"
Michael McKewon uses a Beretta 84FS "Cheetah" during the bank robbery in Season 2, Episode 10 "Remote Control". It is later taken by Justin Fraser (Ryan Kennedy).
Clearly not a beretta 84, note rounded trigger guard probably a beretta 82.
Colt M1991A1 Officers ACP
One of the hostage takers in Season 2, Episode 10 "Remote Control" is seen using a Colt Officers ACP fitted with night sights.
Smith & Wesson Model 686
The bullied high school student in Season 2, Episode 11 "Perfect Storm" steals a Smith & Wesson Model 686 with a 3" barrel from a box under his Dad's bed before taking it to his school.
Ruger GP-100
A Ruger GP-100 with a 6" barrel and stainless finish is used by a man who stole it off a shopkeeper who bought it saying he had been robbed four times in a month. He uses it to take hostages and holds it on his fiancee who wants to die but can't kill her.