The following weapons appear in the film Mortal Kombat:
Mossberg 590 Mariner
Sonia Blade (Bridgette Wilson) can be seen carrying Mossberg 590 Mariner shotgun with pistol grip and a large flashlight mounted above the barrel while pushing through night clubbers in Hong Kong during her hunt to capture Kano (Trevor Goddard). Her partner Jaxx (Gregory McKinney) can be seen using a matching shotgun, only his is a Mossberg 500, identified by the design of the magazine tube cap.
Mossberg 500 Mariner
Heckler & Koch SP89
One of the thugs in the nightclub can be seen armed with a Heckler & Koch SP89, opening fire on Sonia with it before taking a load of buckshot to the chest from Sonia's Mossberg.
Sonia uses a Glock 17L as her sidearm, first pulling it on Johnny Cage (Linden Ashby) aboard the ship taking the protagonists to the tournament, and then on Sub-Zero (François Petit) who freezes it with his powers and snaps the barrel off.