simply lets to rotor spin freely when depressed, and a weighted delay piece to keep the rate of fire practical. This system suffers from weight, low capacity, reduced power, and a high rate of fire, but is very simple. A separate rotor and releaser that are activated by either a bolt or a hammer moving by the power of launched rubber bands. This may be used to simulate moving parts on real firearms, such as slides and bolts. They can also give the user a sense of recoil. Rotary A rubber band rotary gun consists of between 3 and 12 repeater RBGs arranged on a cylindrical "rotor" as barrels. The rotor rotates with either a crank or a motor, and each individual barrel is fired as it reaches the top of its locus. The original tripod-mounted rubber band rotary gun, patented by Surefire Products, was featured on the Gadget Show on UK television in March 2007 and January 2010. A twelve-barrel rotary gun using twelve-shot repeater mechanisms can fire 144 rubber bands automatically. It is fired by manually rotating a crank handle and pulling a firing trigger. Motorized RBGs with rotary barrels are among the latest developments in the world of rubber band guns. In November 2007, Anthony Smith completed the Disintegrator, a 288-shot motorized rubber band gun with 2 12-barrel counter-rotating rotors. This gun can be mounted on a tripod or fired from the hip, and can fire more than 40 rounds per second. There are two common versions of the rubber band rotary gun mechanism: String-operated A rotor with a pre-prepared string spooled around it pulls off rubber bands one-by-one as it is unwound from the rotor and off the barrel. The string is wound around one barrel, then a rubber band placed on that barrel, then the next barrel, and so on until the string can be pulled and the bands fired. Escapement Each barrel has an escapement mechanism on it with a releaser that is pressed once the barrel reaches a certain point. Materials Rubber band guns can be created with many different media balancing ease of construction, reliability, and capacity: Wood The majority of lasting, reliable rubber band guns are made of machined wood. Among the most popular wooden RBG designers are parabellum1262, who has developed magazine-fed automatic and select-fire designs, and oggcraft, known for his unique firing mechanisms. Popsicle sticks Rubber band guns can