Warplock Pistol

Warplock Pistols are commonly used by higher-ranking Skaven, especially the fangleaders of Clan Skryre. Similar in design to warplock jezzails, yet smaller in scale, warplock pistols are devastating at close range.

Warplock pistols can utilize mundane gunpowder, but this reduces their range to 8/16, and damage potential.

Source

 * Warhammer Fantasy RPG 2nd ED -- Children of the Horned Rat (pg. 75).