Grenade rifles are an awesome concept, and locating the rare weapon version, Thump-Thump, will greatly increase the fun and ease with which you play Fallout New Vegas. Watch this video to learn how to get it in the Nellis Array Generators.
From the Creator:
"Thump-thump" is found in the Nellis Array Generators just south of the two array generator switches during the quest Ant Misbehavin'.
Start your career in Graphic Design with the WonderHowTo's Beginners’s Guide to Photoshop Course