H&K G11E

The H&K G11E is a small gun in Fallout 2.

In-game description
This gun revolutionized squad level support weapon design. The gun fires a caseless cartridge consisting of a block of propellant with a bullet buried inside. The resultant weight and space savings allow it to have a very high magazine capacity.

Locations
Frog Morton, the eldest of the Morton Brothers, uses this gun, as does Mel. Failing that, it can be purchased in San Francisco.