Thump-Thump

 is a unique weapon in Fallout: New Vegas.

Characteristics
is a unique grenade rifle which has the extended range of a barrel extension mod found in its common counterparts and enhanced AoE radius. It has 30% faster attack speed, 0.5 lower weight, and is 25% more durable compared to a standard launcher. It also has a unique texture and the words "Thump-thump" scrawled on the side with arrow pointing towards the muzzle. There is also a drawing of an angry beaver with red eyes holding a rifle on the stock.

Location
Thump-Thump is found in the Nellis Array generators just south/south-east of the two array generator switches during or after the quest Ant Misbehavin'. It is next to two broken generators, by the skeleton.

Bugs

 * In 3rd person view when you run it will fall, holstered or holding, and may "follow" you. It is still visible in 1st person view. Unequipping it then reequipping will remedy the problem.
 * If a limb is crippled right after firing, you won't have to reload.