Crystal Pistol:

This item is the same size as a Small handgun. Pulling the trigger activates the psionic energy stored inside the crystal. The energy strikes a single target designated by the user and deals 3d6 points of bludgeoning damage. The user may choose to have the device deal nonlethal damage instead.
The target must be within 130 feet. A crystal pistol can be fired 50 times before the crystal shard is completely drained of psionic energy. This item cannot be recharged.
Firing a crystal pistol is an attack action and does not provoke attacks of opportunity.
Type: Wondrous Item (psionic); Manifester Level: 3rd; Purchase DC: 29; Weight: 2 lb.