Pneumatic nailers (Powered by an air compressor) Air spring drive nail guns (Springs fire nails out of the chamber) Solenoid nailers (Powered by electromagnetic polarization) Cordless nailers (Powered by AA batteries and fuel cells) Plug-In, electric-powered nail guns (Plugs into a standard 120v outlet) Powder-Actuated nail guns (Works similarly to a firearm) Combustion-powered nailers (Powered like a car’s pistons)