Piranha is a 2010 movie released in 3D. It is set in a small town, Lake Victoria, which, as it explodes with spring break tourism, is preyed on by a vicious pack of Piranhas unleashed from beneath the ocean floor by a small earthquake.
The following firearms were used in the 2010 remake film Piranha, aka Piranha 3D:
Novak Radzinsky (Adam Scott) uses a sawed off Mossberg 500 to shoot at the piranhas while riding on a jet-ski and while helping people to get to the shore.
Remington 870 Shotgun
Deputy Fallon (Ving Rhames) uses a Remington 870 to shoot at the piranhas before running out of ammo. Other Deputies use the Remington as well.
Smith & Wesson Model 65
Judging by the shape and color of the butt, Deputy Fallon (Ving Rhames) carries a Smith & Wesson Model 65 holstered as a personal sidearm.
X26 Taser
An X26 Taser is used by Sheriff Julie Forester (Elisabeth Shue) to shock and make a piranha explode while trying to get swimmers into the police boat.