U.S. military personnel, including Private Matt Ocre (Nicholas Hoult) and Sergeant Dylan Chutsky (Glen Powell), appear carrying M16A2 rifles several times during the film.
M4A1 Carbine
In the several scenes, U.S. Army soldiers can be seen carrying M4A1 carbines. Staff Sergeant Harper (Logan Marshall-Green) uses an M4 with no accessories other than rail covers. The film is set during the beginning of the 2003 invasion of Iraq and thus optics and accessories were not as widespread among regular troops as they are today.
Handguns
Beretta 92FS
The Beretta 92FS, standing in for the U.S. Military issued M9, appears several times in the film.
Beretta 92FS (Two Tone)
Cpt. Syverson (Henry Cavill) carries what appears to be a two-tone Beretta 92FS with custom grips.
The M60 machine gun also can be seen mounted on US humvees and other SF vehicles.
M249 SAW Paratrooper
A paratrooper version of the M249 is seen carried by Sergeant Burton (Beau Knapp).
Browning M2HB Heavy Machine Gun
The Browning M2HB heavy machine gun also can be seen mounted on US humvees.
General Dynamics M197 Vulcan
An AH-1W Super Cobra helicopters with its three-barreled version of the GE M61 Vulcan, the General Dynamics M197 Vulcan, is seen providing air support for the troops.