The following weapons were used in the film Bumblebee:
IMI Desert Eagle Mark I
M16A2 rifles are used by US soldiers.
Several US soldiers are armed with Remington 870 shotguns.
Dual-mounted Browning M2HB heavy machine guns are seen on the roofs of Sector 7 humvees.
GE M134 Minigun
The GE M134 minigun are mounted on Sector 7 humvees.
M79 Grenade Launcher
M79 Grenade Launchers are depicted as a electroshock (or taser) gun used by Sector 7 soldiers. Charlie Watson (Hailee Steinfeld) used several of the modified M79s to electroshock Bumblebee back to life at one point of the film.
Defense Technologies 37mm Launcher
Sector 7 soldiers can be seen using Defense Technologies 37mm grenade launchers.
M203 Grenade Launcher
Several M16A2 rifles are fitted with M203 grenade launchers.
2015 Kingman Spyder MR6 Paintball Marker
Several Sector 7 soldiers are armed with paintball rifles that resemble 2015 Kingman Spyder MR6 Paintball Markers. Note the Spyder MR6 Paintball Markers are highly anachronistic in 1987.