Grenade Rifle

The grenade launcher is a weapon in Fallout: New Vegas.

Characteristics
The grenade launcher, as implied by its name, launches 40mm grenades a respectable distance. Although it has a longer range than regular hand grenades, its ammo lacks explosive punch, so it does less damage than a regular old grenade. It's break-action, to reload it you need to crack it open and load another grenade after every shot.

You can attach a pump action mod that allows the grenade launcher to hold 4 rounds in a tubular, under-barrel magazine, allowing for a pump-action mechanism rather than break-action.

Trivia
The grenade launcher and other similar variations either included or simply speculated in Fallout: New Vegas seem largely based upon the real life M79 "Thumper" grenade launcher and the China Lake grenade launcher.

Appearances
The grenade launcher appears in Fallout: New Vegas.