The following firearms are used in the film 8 Heads in a Duffel Bag:
8 Heads in a Duffel Bag
Tommy Spinelli (Joe Pesci) chambers a Colt Junior when he reaches into his trunk at the airport. Many other guns can be seen in Tommy's trunk (see below).
Colt Junior with magazine removed - .25 ACP
Tommy holds the Colt Junior.
Heckler & Koch USP
Tommy (Joe Pesci) uses a Heckler & Koch USP as his main sidearm. It changes hands several times, once used by Charlie (Andy Comeau) in an attempt to intimidate Tommy.
Heckler & Koch USP - 9x19mm
Tommy enters Charlie and Steve's room with his USP drawn.
Tommy intimidates Ernie into making calls to find Charlie.
Tommy realizes that Steve would make a perfect "Frank" to replace one of his missing heads.
Tommy takes Charlie out into the Mexican desert.
Tommy prepares to execute Charlie.
A security guard at the Mexican airport draws his Beretta 92FS on the two hitmen.
The airport guard aims his Beretta at the hitmen.
A variety of guns can be seen inside Tommy's trunk in the airport parking garage, such as a Colt Detective Special, Colt New Service, Heckler & Koch USP, several other revolvers, and two sawed-off shotguns.
Tommy reaches for the Colt Junior in his trunk.