Six tubes joined together. Each containing a spring and catch. Retaining frame with handle at the back with a late Colt mechanism ( trigger rotates - locks - and firers in one action. To load - two flip down levers at the front connected to a ramnrod. Place the gun upright on to flip down tripod at rear. Stand on levers. Spring compressed. When you get off, a spring returns levers to top and rotates the tubes to next positon. Repeat another five times, insert bolts ( internal bolt retainer may be required. ) Point at target - if you miss you've another five chance! Have fun!