Det. Leona Cantrell (Maria Conchita Alonso) uses a SIG-Sauer P226 with a laser sight as her sidearm of choice. Det. Jerry Lambert (Bill Paxton) carries one as well, notably aboard the subway train and later when attacked by the Predator.
During the first shootout, when Harrigan is selecting a gun, we can see that he has several guns in his car, including a 2.5"-barrel Smith & Wesson Model 66
This gun, dated 1715, was presented to Mike Harrigan (Danny Glover) by the Elder Predator at the end of the Movie. This gun was a 17th Century Replica Flintlock Customized for the Movie by Keystone Arsenal Replicas.
Mike Harrigan keeps a Remington 870 with a pistol grip and a sawed-off stock and laser sight. The gun has been cosmetically changed to look like something more high tech. He uses it to kill various gang members and to injure the predator near the end of the film.
A Franchi SPAS-15 can be seen being used by an LAPD sergeant (Steve Kahan) with a laser sight attached to it (which seems rather redundant for a shotgun) in the beginning of the movie.
In the opening shootout, several LAPD officers can be seen with the Mossberg 500 Bullpup. Garber (Adam Baldwin) also is seen carrying one as he confronts Harrigan at the end of the movie.
Mike Harrigan (played by Danny Glover) uses a unknown CAR-15 variant with a M203 grenade launcher attached to it. Since the receiver is never seen clearly it remains unidentified.
Used by Peter Keyes' (Gary Busey) government agents who attempt to hunt down the Predator in the abattoir. It has side-by-side barrels.
Steyr AUG
Used by various Colombian gang members during the shootout at the beginning of the film. Some LAPD officers are also seen holding these weapons outside of the Metro station.
When Mike Harrigan (Danny Glover) goes to the metro station to find Jerry Lambert (Bill Paxton), a police officer wearing a PASGT helmet can be seen holding an M16A1. Various M16A1s can be seen when the Colombians pick up weapons at the beginning of the film.
El Scorpio is seen using two Micro Uzi's akimbo during the opening scene before being forced to flee. These customized two- tone Uzi's are similar to the ones used in the film Total Recall.
At the start of the movie, one of the Colombian gangsters picks up a Barrett M82 from their weapons cache. The gangster with the Barrett M82 is Thomas Rosales Jr., a Hispanic professional stuntman who routinely plays unnamed thugs in motion pictures.
Two Colombians pick up two M60 machine guns when they are in their weapons cache. One member of Peter Keye´s (Gary Busey) team uses one with the bipod and the sights removed(A la US Navy SEALs in Vietnam).
Colombian gang leader 'El Scorpio' (Henry Kingi) uses a Def Tech 1315 37mm launcher, made to look like HE launcher. Its used to kill or injure two LAPD officers and destroy a Police car.