Revolver, Variant (3.5e Equipment)
From D&D Wiki
A revolver is a simple pistol with a revolving cylinder, allowing for six shots before reloading is required, however, a character may fan the hammer and fire all 6 shots in one turn. However, this reduces the range to 20ft.. A revolver takes a full-round action to reload, and must be reloaded once every six uses. A revolver must be reloaded with both hands. A revolver uses sling bullets. Also, when using a revolver, add your dexterity bonus to all attack and damage rolls.
It can be crafted with a craft engineering check of 15. If the check is over 30, a +1 modifier is gained for every 3 numbers above that.
See Revolver for more information.