In 1861, Dr. Richard Gatling developed a hand-crank operated, multibarrel firearm destined to become the world's first gun capable of firing multiple rounds in sustained bursts. This kit enables you to capture a taste of what it must have been like to fire the legendary Gatling gun by converting two Ruger 10/22 rifles (not included) into a twin-barrel modern rendition in .22 caliber. Fun and affordable to shoot, the machined aluminum kit features bronze bushings, a trigger bar on thrust bearing, aluminum receiver covers, anti-aircraft-style sights, swivel feet, barrel guards, muzzle brakes and limit screws. Rate of fire is four rounds per crank revolution. Assembles in minutes with ordinary hand tools. Classified semi-auto, so no special BATF permit is needed.