XL-40 Revolver

While it only hold six shots, one hit from this gun is more then enough to kill someone.

Overview
Holding six 40 caliber beam laser rounds, this revolver can punch through bodies, armor, and even shields. The recoil of the gun only allows it to be fired in quick succession in close quarters. It's also not wise to fire the gun with one hand, as the recoil can hurt the user if they do not properly hold it.