Piranha 3D (2010)

The following firearms were used in the 2010 remake film Piranha, aka Piranha 3D:

Mossberg 500

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.

Mossberg 500 with sawed-off barrel and stock - 12 Gauge

Remington 870 Shotgun

Deputy Fallon (Ving Rhames) uses a Remington 870 to shoot at the piranhas before running out of ammo.

Remington 870 Police Magnum Riot Shotgun - 12 Gauge

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.

A X26 Taser.