Captain Bill Fawcett (Chris Potter) carries a two-tone Heckler & Koch USP, presumably a USP-45 based on the muzzle diameter during a confrontation with Shane Wolf (Vin Diesel) and Julie Plummer (Faith Ford). In one sequence, the gun's hammer is cocked, but in the next shot, the hammer is not.
The Montgomery County (Maryland) police officers responding at the house all carry Glock 17 pistols. Some of these pistols appear to have a more shiny finish, suggesting they are props. The officers are wearing blue uniforms, however, when the movie was made, the MCPD wore khaki uniforms. They have since switched to black uniforms, in 2008.
Error creating thumbnail: File missingM4A1 with M68 Aimpoint scope - 5.56x45mmError creating thumbnail: File missingMr. Chun (Dennis Akayama) with his suppressed M4A1. The weapon has a Gemtech suppressor, an M68 Aimpoint sight, an AN-PEQ2 IR designator and a flashlight on a side rail and a laser on the opposite rail. Contrary to common knowledge, red dot sights can be used with the front caps on, using both eyes open as an 'instinctive' point and shoot sight.Error creating thumbnail: File missingMr. Chun forces the police to drop their guns. Note that the rear cap on the red dot sight is also down.
Other
M203 Grenade Launcher
Underslung on Mr. Chun's M4A1 is an M203 grenade launcher, which seem to have unfamiliar parts seen inside the muzzle (possibly devices created by the pyrotechnical special effects crew).
During the SEAL mission at the film's beginning, Wolf is seen using a spear gun-type weapon to fire a type of RPG at the boat and then at the enemy helicopter.
