The SIG-Sauer P226 is the preferred sidearm of Red Troop and is used throughout the series. It is frequently seen holstered whenever the team are wearing their counter terrorist gear, but is normally only used for undercover work.
SIG-Sauer P225
Jamie (Jamie Draven) can be seen using SIG-Sauer P225 as his sidearm in several episodes, even though this pistol is a dated design with a smaller magazine capacity than the P226s and P228s which Red Troop usually uses on the show. The use of this pistol in "Communication" (Episode 2.1) is rife with continuity errors. Firstly, Jamie can be seen holding the pistol below decks on the boat when earlier he was using a larger P226 whilst climbing aboard. Secondly, Henno (Ross Kemp) draws a P225 from his holster and clears it at the end of the episode, despite the fact that he was previously using the similar, but more modern, P228.
SIG-Sauer P228
In some episodes, the smaller SIG-Sauer P228 are used by Red Troop.
Heckler & Koch USP
Heckler & Koch USP pistols are seen in some episodes, usually in the hands of the antagonists.
Smith & Wesson Model 60
Several of the terrorists on the boat in "Communication" (Episode 2.1) can be seen using Smith & Wesson Model 60 snub nose revolvers.
Walther P99
A Walther P99 can briefly be seen in "The List" (Episode 2.4) as the pistol being used by the sleeper assassin Levi (Simon Gregor).
In "Dead is Forever" (Episode 2.6) one of the rebels, uses what appears to be an original Beretta 92 during a mock execution and a ransom video. Oddly this particular pistol is fitted with a slide which is thinner at the front than the back and different grip plates, features which do not appear on the majority of Beretta 92s.
CZ 75B
One of the rebels in "Dead is Forever" uses a CZ 75B during a mock execution. The weapon misfires, prompting the user to say "Damn these cheep Czechoslovakian weapons."
Submachine Guns
Heckler & Koch MP5A3
The standard-issue weapons for the SAS unit Red Troop in the TV show are Heckler & Koch MP5A3 submachine guns, which are always seen with Surefire fore ends and tactical flashlights as well as the SEF-style lower receiver. These weapons are typically used in Red Troop's domestic hostage rescue missions.
The other SAS unit, Blue Troop, also use identical weapons, as do many Metropolitan Police SO19 (now CO19) officers throughout the show.
Heckler & Koch MP5KA1
Heckler & Koch MP5KA1 submachine guns are used by a number of the French special forces soldiers in "Communication" (Episode 2.1). The MP5KA1 is a version of the original MP5K designed for concealed carry (it lacks the H&K dioptre sights in order to avoid getting snagged on clothing when being drawn quickly from beneath a jacket).
IMI Uzi
Several of the French special forces soldiers in "Communications" (Episode 2.1) are armed with IMI Uzis.
Mini Uzi
The Mini Uzi machine pistol appears in several episodes being used by the bad guys..
Heckler & Koch MP5SD3
Red Troop also makes use of the suppressed Heckler & Koch MP5SD3 in "What in the Name of God" (Episode 2.5) when Red Troop invades the stronghold of a Christian cult terrorist group to capture their leader.
PPSh-41
A PPSh-41 can be seen briefly in the hands of one of the Serbian soldiers in Episode 1.6, "Something to Do with Justice".
Several of the French special forces soldiers in "Communication" (Episode 2.1) carry Heckler & Koch HK33s.
Colt CAR-15
CAR-15s are a common weapon used by Red troop, and can be seen used by multiple characters in "Something to Do with Justice" (Episode 1.6). These CAR-15s are most likely either mock-ups or commercial copies, as the flash hiders are too long for E1 rifles, but lack the grenade ring found on later E2 rifles.
Colt AR-15 Sporter-1
Colt AR-15 Sporter-1s are seen frequently on the show in the hands of Red troop as a stand in for M16s. They can be recognised as Sporter-1s by their screw type pivot rather than push pin pivot, which is visible in some shots. The rifle is particular prevalent in "Dead is Forever" (Episode 2.6) where it is the source of continuity errors where Henno (Ross Kemp) and Jamie (Jamie Draven) switch between using SP1s and M16A2s throughout the episode.
M16A1 (with M16A2 hand guards)
Red troop make use of M16A1s fitted with A2 type handguards on several occasions for oversees missions where more range is required.
Colt M16A2
Genuine M16A2s are also used by Red Troop, alongside the mock A2s based on M16A1s listed above
AKS-74U
AKM
Colt M16A1
Sniper Rifles
Accuracy International L96A1
Whenever Red Troop requires sniper support, the snipers are typically armed with Accuracy International L96A1 rifles in 7.62x51mm NATO.
Machine Guns
FN Minimi
Red Troop is frequently seen using the FN Minimi for support during missions overseas.
L7 GPMG
RPD
Seen in season 4 episode 1, "Changing of the Guard"
Browning M1919
Seen in "Weapon of Choice", season 3 episode 4. In the same episode at the beginning, it was mounted on a "Russian tank".
Shotguns
Remington 870 Police Folder
Used by the SAS to breach doors.
Heavy Weapons
Cobray CM203
Red Troop's M16s and CAR-15s are often fitted with what appear to be M203 grenade launchers. However, a close inspection of the receivers reveals that they are actually the look-a-like Cobray CM203 37mm launchers which are often used to substitute for the M203 in many films and TV shows.