Armegeddon's Hammer Design Specs and shopping list ( Assembly )

Design Goal:   Build a High rate of fire rubber band gun on a sub-machine gun , bull pup style frame. Eliminate the wooden weak points on many other rubber band guns. It doesn't need to be graceful or pretty, just raw, heavy duty cubical justice.  Ammo:  Office depot large red rubber bands  Tools Needed: electric drill metal/wood drill bits screwdriver wrench hammer bench vise or clamp measuring tape  Building Supplies:  Frame Steel band (1/8" x 1" x 4') Three pieces of wood ( 1.5"x1.5"x4") 3 pieces of thin cardboard, or one thick ( 1"x 2" ) 6 wood screw ( .5" long ) 1 bolt + nut ( .5" long ) bobbie pin ( what kind of invention would it be without a bobbie pin?) Spinner 1 steel dowel ( .25" diameter x 4" ) 1 steel dowel ( .1" diameter x 3" ) 1 steel dowel ( .1" diameter x 1" ) 15 washers ( .25" inner, .35" outer diameter ) 2 washers ( .25" inner, .5" outer diameter ) Trigger 1 bolt + nut ( 1.25" long ) 3 bolt + nut ( .5" long ) 2 "T" supports 20 washers ( .25" inner, .5" outer diameter ) smaller rubber band All over Much duck tape