A while back, Gavilan posted a design for a really awesome Rubber Band Gun but I thought it was lacking one or two things. So I added a Laser Sight mount (which fits laser pens such as this: Green Laser Pointer ) And an Ammo Clip that can store additional rubber bands. These mods can be easily added to Gavilan's original design. Add just one of them or both!First print out the Rubber Band Gun by Gavilan (if you haven't already) Laser Sight Mount Print 2 of the Laser_mount.STL file (No supports, 10% infill) Attach to barrel using: Ammo Clip Print 1 each of the Clip_top.STL and Clip_bottom.STL (No supports, 10% infill) Attach under base of barrel (see pictures) using: