The Clerics' pistol in 'Equilibrium' was also the same pistol McClane used in 'Die Hard' (according to PoL anyway). So you don't really have to modify it at all if you don't want.
you could do a Time Cop gun.
Robocop's gun was based on the Beretta 93R which is somewhat different than the 92F.Robocop's Auto-9 was based on a beretta.
OK.No, I just looked it up on IMFDB and the pistol was heavily modified from a standard 92. A custom supressor to the front, an M-16 fire selector was added where the take down knob is on the real guns with engraving for lock,semi, and auto; and a few other cosmetic changes were done, it'd be a heavy custom job to do.
Die Hard and the Lethal Weapon series use the standard issue Beretta 92FS, making it a simple prop to have.
Kate Beckinsale's character used twin Beretta 92FSs (as well as twin Walther P99s). They had some nice drop-in compensator's on them.