Evil Run Amok
Any feat that can be used for crossbows can be used for firearms.
Pistol: A one handed weapon that has a single shot, requires the ammunition black powder cartridge.
Musket: A two handed weapon that has a single shot, requires the ammunition black powder cartridge.
Goblin Boom Pistol: A one handed weapon that can be loaded with either bullets or a black powder cartridge.
Goblin Pistol: This is a 4 shot revolver that uses bullets as ammunition, as long as the revolver has a bullet in any chamber the weapon will load as a free action. Any chamber can be loaded as a minor action.
Goblin Musket: A single shot two handed weapon, uses bullets as ammunition.
Goblin Scattergun: A single shot weapon that uses black powder cartridge as ammunition, the scatter effect gives a slightly better chance to hit.
Black Powder Cartidge: Black powder and a lead ball wrapped in a paper cartridge for faster reload times.
Bullet: Self contained ammunition.