Revolver, Variant (3.5e Equipment)
From D&D Wiki
A revolver is a simple pistol with a revolving barrel, allowing for six shots before reloading is required. 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. Revolver bullets (ammunition) cost 25 Sp for 30.
See Revolver for more information.