There are several appearances throughout the early stages of the film of M4A1 Carbines, used by U.S. military personnel at the U.S. Special Operations Command Central (SOCCENT) base during Blackout's attack, as well as by Captain William Lennox (Josh Duhamel)'s Delta team. The M4A1's used by the special forces team are fitted with various SOPMOD accessories including ACOG scopes, AN/PEQ-2 IR designators (which are erroneously shown emitting a laser beam that can be seen by the naked eye instead of the real AN/PEQ-2's invisible Infra-Red laser), RIS foregrips, and camougflage paint schemes.
In addition to the accessories mentioned above, several M4A1's used by Cpt. Lennox's (Josh Duhamel) Delta team are equipped with M203 grenade launchers, most notably Air Force Technical Sergeant Bobby Epps (Tyrese Gibson).
We also see Sector 7 soldiers wielding stand-alone M203 grenade launchers while in the Hoover Dam and during the final battle with the Decepticons in the streets of Mission City.
Captain Lennox can be seen carrying a Colt Model 933 carbine as his weapon of choice in Qatar, distinguishable from the M4A1's carried by his men by the shorter 11.5" barrel. His weapon is fitted with an M68 Aimpoint red dot and AN/PVS-17 night vision scope, a Surefire M900 weaponlight foregrip, Vltor MOD stock, Yankee Hill Manufacturing Phantom Flash Supressor, and an AN/PEQ-2 IR designator (which inaccurately emits the same visible green laser as those on his mens' M4A1's).
There are two brief appearances of M16A2 rifles in the film, first in the hands of soldiers responding to Blackout's arrival at the SOCCENT base when he begins his attack, and later in the hands of soldiers guarding Air Force One as Frenzy sneaks off the plane.
A heavily-customized Mossberg 590 (similar to that seen in Rambo (2008)) is used by Agent Reggie Simmons (John Turturro) and Maggie Madsen (Rachael Taylor) to fend off Frenzy at the Sector 7 headquarters. It has a Magpul M93A rear stock attached to a Mesa Tactical M4 adapter block and a Mesa Tactical Top receiver Rail with an EOTech 552 holographic sight.
Milkor M32 MGL launchers are used by Sector 7 soldiers and Captain Lennox (Josh Duhamel) and his team to battle the Decepticons during the fighting in Mission City, and are fitted with the factory Armson OEG reflex sights. Captain Lennox's M32 is also shown mounting a laser target designator on the side of the barrel. All of the launchers are also fitted with Vltor Modstocks.
In addition to the Milkor M32's, Sector 7 soldiers and some of Captain Lennox's (Josh Duhamel) men can also be seen using Defense Technologies 37mm grenade launchers during the final battle, equipped with folding stocks and C-More red-dot sights.
Captain Lennox (Josh Duhamel) can be seen carrying a customized M1911A1 pistol as his sidearm in a Serpa-retention holster, using it to threaten Agent Simmons (John Turturro) and other Sector 7 agents during the standoff.
During the standoff between Sector Seven and Captain Lennox's (Josh Duhamel) team, one of the Sector 7 soldiers can be seen aiming a SIG SG-552 at Captain Lennox.
First Sergeant Donnelly (Zack Ward) and Ranger Team #3 (Brian Sheehan) of Cpt. Lennox's (Josh Duhamel) Delta team carry FN M249 Paratrooper SAWs fitted with Leupold CQ/T scopes as their main weapons, primarily during the battle with Scorponok.
Sector 7 soldiers can be seen using Heckler & Koch UMP-45's in several scenes during the film, fitted with vaying accessories including C-More red-dot sights.
Another weapon used by Sector 7 soldiers and Captain Lennox's (Josh Duhamel) team during the final battle are several heavily-modified Ramo RT-37 riot control launchers fitted with unknown red dot sights (appears to be a Bushnell Holosight), barrel shrouds and M4 type stocks. Captain Lennox most notably uses one when he charges Blackout on a comandeered motorcycle, skidding underneath the Decepticon to get a clear shot at the robot's weakly-armored lower body.
A village militia member in Qatar is seen briefly firing a pistol of unknown make and model, and is at an unfocused distance from the camera, making identification very difficult. The only way to confirm the make of this pistol would be if an armorer of the film would share their insight with IMFDb.
While at Sector 7 HQ, the power of the All Spark is demonstrated when Glen Whitmann (Anthony Anderson)'s cellphone is used to create a new transformer, the feral robot producing several weapons including a miniature shoulder-mounted RPG-7 launcher.
Secret Service agents onboard Air Force One can be seen using SIG-Sauer P226 pistols as their sidearms (a factual error: the Secret Service never used the P226, only the P228 and P229). A cop at the police station (Rick Gomez) also brandishes a P226 while threatening Sam Witwicky (Shia LaBeouf) during his interrogation.
One of Captain Lennox's (Josh Duhamel) men draws what appears to be a SIG-Sauer P228 during the standoff in the Sector 7 headquarters, likely standing in for the US Military issue M11.
A Beretta 92FS can be seen in the hands of a police officer who arrests Sam Witwicky (Shia LeBeouf) when he reports his car stolen. Beretta 92FS pistols are also seen as the sidearms of most of Captain Lennox's (Josh Duhamel) men, likely standing in for the US Army standard issue Beretta M9.
Heckler & Koch MP5KA4s are seen being used by Secret Service agents onboard Air Force One, as well as a few Sector 7 agents (notably Brian Stepanek) when meeting the Autobots, who are quickly disarmed of their weapons by Jazz (V.O Darius McCrary).
Error creating thumbnail: File missingHeckler & Koch MP5KA4 with 15-round magazine - 9mm.Error creating thumbnail: File missingA Secret Service agent does an "HK-slap" on a Heckler & Koch MP5KA4 on board Air Force One.Error creating thumbnail: File missingSector Seven Agent (Brian Stepanek) readies his MP5KA4 as the Autobots surround the car. A few seconds after this shot we see a few more USSS agents aiming MP5Ks as well.Trivia: Brian Stepanek was worried that when the rubber MP5K he was holding was yanked from his hand with a wire to immitate Jazz's high-powered magnet, the gun would hit him in the face. He was assured this would not happen, yet note in these shots how he holds his face in pain after recieving a rubber gun to the face.
Heckler & Koch MP5A3 Navy
FBI agents are seen armed with Heckler & Koch MP5A3 Navy submachine guns during the raid on Glen's (Anthony Anderson) home, fitted with Surefire 628 dedicated forend weaponlights. Sector 7 agents can also be seen brandishings these in their first meeting with the Autobots, but are promptly disarmed by Jazz's (V.O. Darius McCrary) powerful magnet.
File:MP5A3N.jpgHeckler & Koch MP5A3 9x19mm with Navy trigger groupHeckler & Koch MP5A3 Navy with Surefire 628 weaponlight and safe-semi-2 round burst firing selections - 9mm.Error creating thumbnail: File missingAn FBI agent bursts through the door of Glen's house armed with a Heckler & Koch MP5A3 Navy.Error creating thumbnail: File missingSector 7 agents aim their MP5A3-Ns at the Autobots before being disarmed by Jazz.Error creating thumbnail: File missingRanger Team #3 (Brian Shehan) grabs an MP5A3-N with a tri-rail, M68 Aimpoint scope, and dual mag clamp and hits a Sector 7 soldier with it.
Heckler & Koch G36C
When the FBI storms Glen's (Anthony Anderson) home, several agents can be seen armed with Heckler & Koch G36C's fitted with tactical flashlights. Sector 7 soldiers can also be seen carrying G36C's, as well as one of Captain Lennox's (Josh Duhamel) men during the standoff at Sector 7 HQ.
When FBI Agents storm Glen's (Anthony Anderson) house, one has a Glock 22 in his holster, as assumed by it being the standard issue sidearm of the FBI.
Several Browning M2HB heavy machine guns are seen mounted on the roofs of US military Humvees in Qatar when Blackout attacks the SOCCENT base. The Decepticon Brawl can also be seen with a pair of M2HBs atop the turret of his tank form.
When Sector 7 agents capture Bumblebee (V.O. Mark Ryan), they use grapple guns mounted on the door of their helicopters. The main build up of the guns is a Browning M2HB machine gun, heavily mocked up with hollywood embellishments.
During the attack on the SOCCENT base in Qatar, FN M240G machine guns can be seen mounted on several Humvees as well as UH-60 Blackhawk helicopters shown searching for survivors following the attack.
During the final battle, several UH-60 Blackhawks sent to airlift Sam Witwicky (Shia LaBeouf) and the All Spark out of Mission City can be seen armed with door-mounted M60 machine guns.
When the battle with Skorponok gets too out of hand for Captain Lennox (Josh Duhamel) and his men, they call in air support and within minutes A-10 Thunderbolt II "Warthog" planes come flying in, firing their GAU-8/A Avenger Gatling Guns. Even the 30mm armor piercing depleted uranium rounds do little on Skorponok, and thus greater firepower is asked of.
The Decepticon Blackout has an arm-mounted GE M134 Minigun. His vehicle form doesn't seem to have an equivalent weapon; Brawl has a similarly mysterious minigun on his arm in robot mode, though it's possible this was his tank mode coaxial weapon.
The Decepticon Starscream (V.O. Charles Adler), being a Lockheed Martin/Boeing F-22 Raptor in vehicle form, has a 20mm M61A2 Vulcan Cannon, which while never used in vehicle form, is used by him to fire from his arm during the final battle in Mission City.
After the Warthogs fail to take down Skorponok, an AC-130U "Spooky" gunship flies over and bombards him with both a Bofors 40mm L/60 and an M102 howitzer.
Error creating thumbnail: File missingThe AC-130U gunship flies high over the battlefield and fires its guns at Skorponok. It should be noted that the Bofors is firing far too fast, as it is reloaded four rounds at a time by human operators. The rate of fire is more consistant with staggered fire from the gunship's 25mm GAU 12/U with occasional shots from the 40mm.
M102 howitzer
After the Warthogs fail to take down Skorponok, an AC-130U "Spooky" gunship flies over and bombards him with both a Bofors 40mm and a M102 howitzer.
File:Trans-Howitzer105mm-1.jpgThe AC-130U gunship fires its M102 105mm howitzer at Skorponok, at an even more ridiculous rate of fire than the Bofors. Since the howitzer is loaded round by round by a gun crew, the rate of fire shown in the film would be impossible.
