Wraith stunner pistol
From The Stargate Omnipedia
Smaller version of the Wraith stunner rifle, but with the same strength in stunning prey. Wraith pistols are far less cumbersome than the rifles and are often preferred over the rifles. It is not known whether their smaller size delivers a proportionally less effective blast.
KEY EPISODES
The Siege, Part 3 - Wraith warriors wield stunner pistols inside the city of Atlantis.
Runner - Ford possesses a stunner pistol and uses it to threaten McKay into compliance.
The Hive - Shots are fired between Wraith and Ford's coalition, as his people board a hive ship in a joint mission with Colonel Sheppard's unit.