Colonel John "Hannibal" Smith (Liam Neeson) carries a Para-Ordnance S14-45 Limited and uses it throughout the film. There is a slight continuity error in the beginning: The P-14 that Tuco's henchman tries to kill Hannibal with has six front slide serrations, but the one Hannibal uses after that (also for the rest of the film) has only three. This means that one of the P-14s used on-set was older than the other.
Colt Anaconda
A corrupt policeman working for General Tuco brandishes a Colt Anaconda revolver in the film's prologue.
Smith & Wesson Model 28
One of General Tuco's men is briefly seen firing a Smith & Wesson Model 28 "Highway Patrolman" revolver in the film's prologue.
Beretta 92FS
Various U.S. Army soldiers use Beretta 92FS pistols throughout the film, including members of Lt. Sosa's Defense Criminal Investigative Service (DCIS) team. Agent Kyle (Kyle Riefsnyder) pulls a Beretta on Pike (Brian Bloom) in Frankfurt, Germany but then clumsily tries to affix what he calls a "European silencer" onto the Beretta, while holding the loaded pistol between his knees and pointed at his own head, before which he had dropped the suppressor on the floor while chambering the pistol. Meanwhile, an exasperated Pike corrects him by saying that it's a suppressor, and also reminds him it threads on counterclockwise. Pike disarms the agent and hands the gun to the other agent sitting on his right side; that agent then awkwardly holds the gun against his head while trying to cover his ear during a phone call. Pike also has a Beretta 92FS in his tactical vest during the harbor shootout in the climax.
Brock Pike (Brian Bloom, the film's writer) uses a SIG-Sauer P226 pistol when he kills the rest of his Black Forest guys in Baghdad, and while pursuing the A-Team in Frankfurt. Lynch (Patrick Wilson) also carries a P226 throughout the film and is seen pulling it on Pike in the car in Frankfurt.
Glock 17
Lieutenant Templeton "Face" Peck (Bradley Cooper) uses a Glock 17 as his sidearm throughout the film. In addition to his Glock 17, he carries a Walther P99 in a cross-draw holster during the Baghdad mission.
Colt M1911A1
General Javier Tuco (Yul Vazquez) carries a stainless steel Colt M1911A1 with pearl grips as his sidearm.
CZ 75B
Captain H.M. "Howling Mad" Murdock (Sharlto Copley) briefly uses a CZ 75B in the shootout after the A-Team's final mission in Baghdad.
Walther P99
Face has a Walther P99 holstered in his tactical vest while in Baghdad.
Shotguns
Franchi PA3
A guard in the prologue is seen with a Franchi PA3 shotgun.
Remington 870
A Remington 870 is used by a US Army MP during the escape of Sgt. Bosco "B.A." Baracus. There is also a Remington 870 Slug Gun with synthetic furniture and an extended tube magazine seen in the hands of one of General Tuco's men.
Submachine Guns
Heckler & Koch MP5A3
CIA Special Activities Division/Special Operations Group agents and U.S. Army soldiers both use Heckler & Koch MP5A3 submachine guns during the film's finale.
Heckler & Koch MP5K
Lynch (Patrick Wilson) uses a Heckler & Koch MP5K in the film's finale. Like Pike's stockless SG 552, it's fitted with a single-point sling, allowing the user to pull the gun tight against the sling for additional support in place of an actual stock.
Heckler & Koch MP7
A guard at the bank during the exchange of the printing plates carries a Heckler & Koch MP7 submachine gun. It is hard to see due to being a black gun held in front of a black trench coat. An MP7 is also used by a CIA SAD/SOG agent at the harbor in the film's finale.
Heckler & Koch UMP
A Heckler & Koch UMP is seen used by a CIA SAD/SOG agent at the harbor in the film's finale.
IMI Uzi
An IMI Uzi is seen carried by a guard outside the bank.
Rifles
Ruger Mini-14
The classic Ruger Mini-14 with a factory folding stock in stainless steel is used by Col. "Hannibal" Smith to rescue Face in Mexico. This was done as a tribute to the original TV series where the Mini-14 was a favorite of the A-Team.
Heckler & Koch HK33
One of General Tuco's henchmen is briefly seen with a scoped Heckler & Koch HK33 while searching for the A-Team.
Heckler & Koch G3A3
Several of General Tuco's men use Heckler & Koch G3A3 rifles while pursuing the A-Team in Mexico.
M4A1 Carbine
Col. John "Hannibal" Smith and Lt. Templeton "Face" Peck are both seen using M4A1 Carbines with tan furniture, Magpul CTR stocks and vertical foregrips during their final mission in Baghdad. Hannibal's M4A1 has an EOTech XPS sight while Face's has an Aimpoint M4S. Face also wields an M4A1 in the harbor shootout in the climax.
M16A2
Several U.S. Army soldiers in Iraq are seen with M16A2 rifles.
Zastava M70AB2
Iraqi guards escorting a valuable cargo in Baghdad are armed with Zastava M70AB2 rifles.
M1 Garand
U.S. Army honor guards are seen firing M1 Garand rifles at a funeral.
SIG SG 552
Pike (Brian Bloom) carries a SIG SG 552 with a micro red-dot sight and a foregrip while pursuing the A-Team in Frankfurt. The rifle's stock has been removed and replaced with a sling, allowing Pike to conceal the weapon under his jacket. Pike can be seen reloading the rifle at least four separate times throughout the chase.
Heckler & Koch G36K
Pike uses a Heckler & Koch G36K fitted with rails and a foregrip during the film's finale. This weapon is also carried by Black Forest contractors in Iraq and by a CIA SAD/SOG agent during the film's finale.
An F-22 Raptor defending US airspace in the prologue is seen armed with an M61 Vulcan cannon. American F-18 Hornets in Germany (actually Canadian CF-18 Hornets) are also armed with Vulcans.
GE M134 Minigun
Murdock fires a GE M134 Minigun from a V-22 Osprey at the soldiers who pursue the A-Team during the Baghdad mission.
M60E3
A gunner aboard General Tuco's helicopter (played by the film's armorer Rob Fournier) fires an M60E3 machine gun at the A-Team's Huey in the prologue.
Browning M2HB
Face uses a Browning M2HB machine gun mounted on an M8 Buford light tank (which in reality never entered service with the US military) to shoot down an attacking MQ-9 Reaper UAV; the Buford and Reapers are both referred to by name. The Reapers themselves are armed with an exaggerated loadout of eight AIM-9 Sidewinder missiles, along with a fictional internal machine gun (possibly a pair), the muzzle flash appearing under the nose near where the drone's camera is.
Browning M2HB (Mocked up as DShK heavy machine gun)
Browning M2HB machine guns mocked up to resemble the DShK heavy machine gun are mounted on vehicles escorting a valuable cargo in Baghdad.
M249 SAW Paratrooper
An M249 SAW Paratrooper is seen carried by a "Black Forest" contractor early in the film. Note that since this film was shot in and around Vancouver, this could also be a Daewoo K3 mocked up as an M249.
Launchers
Bofors 40mm
An AC-130 sent to eliminate the A-Team uses its Bofors cannon to utterly demolish a large building. The AC-130 is also armed with an M102 howitzer and GAU-12/U rotary cannon. Watching the live footage, Lynch comments "Wow, that's awesome. It looks exactly like Call of Duty, doesn't it?".
KAC Standalone M203 Grenade Launcher
Sgt. Bosco "B.A." Baracus fires a Knight's Armament Company Standalone M203 grenade launcher at Königsbank Tower in Frankfurt.
Mk 19 Automatic Grenade Launcher
A Mk 19 Grenade Launcher fitted with a night-vision scope is briefly seen used by the CIA team at the port. It's implied to be what causes many secondary explosions on the cargo ship, though it's not explicitly seen firing, nor are tracers visible.
Mk 153 SMAW
Pike uses a Mk 153 SMAW to punch a hole into the hull of the cargo ship during the final shootout. Face refers to the weapon by name "SMAW".