The following weapons were seen in the film Napoleon Dynamite:
A Glock 17 is seen on the wall of Rex Kwon Doe's (Diedrich Bader) dojo. One can also be seen on a television ad of Rex Kwon Doe's dojo.
A Generation 3 Glock 17 9x19mm.
An assistant with a Glock 17 before it's knocked out of his hand by Rex.
A Glock 17 can be seen above Rex's head.
Single Barrel Shotgun
When Napoleon (Jon Heder) goes to school to return Deb's (Tina Majorino) things, Lyle (Dale Critchlow) shoots a cow with a Single Barrel Shotgun.
Harrington & Richardson Topper Model 158 Shotgun with case hardened receiver - 12 gauge
Lyle checks his Single Barreled Shotgun.
Lyle loads his Single Barreled Shotgun.
Lyle realizes that he can't chamber his Single Barreled Shotgun due to his weak thumb so he uses the space between the thumb and the fingers to push in order to chamber it.
Lyle with his Single Barreled Shotgun before firing it offscreen.
In addition to the Glock 17, a Tokarev TT-33 can be seen on Rex's wall.
Tokarev TT-33 - 7.62x25mm Tokarev.
A Tokarev TT-33 on Rex's wall (circled in red).