The Internet Movie Firearms Database. There is nothing cooler. Here are the weapons on the Expendables! All star action case, but the weapons were amazing:
The single action colt revolver
Like Black Ops, the Dual Wield Kimber
The F2000 which is a bullpup and in Call of Duty as well\
The coolest is the AA-12 with a drum magazine with Frag-12 explosive shells.