A modified Taurus PT99 Stainless pistol was used by Disco Boys leader Tony P (Eddie Izzard).
Error creating thumbnail: File missingNewer (1998 and later) Taurus PT99 9x19mm (note the wider cocking serrations in the slide compared to older model above).
MAC-10
Seen in the hands of the Japanese gang during the battle with the Mystery Men at Casanova's Mansion.
Error creating thumbnail: File missingCommercial CAR-15 semiautomatic Rifle - 5.56x45mm. This is strictly a semiautomatic civilian copy of the XM177 style of rifles. The flash hider is a smaller diameter copy of the XM-177 and has no sound suppression qualities and is permanently welded onto the barrel to make it legal length for over the counter gun store sales.
Seen in the hands of the Disco Boys throughout the film. A number of these handguns were seen in the hands of various gang members at Casanova Frankenstein's mansion later in the film.