Print 2 and mount a green laser. You can now see where your scope is aimed! Designed to fit a 6 inch tube with holes drilled 32mm apart. Part has slightly undersized holes so they can be reamed for tight fit. I used 10-32 Screws to mount to the body and some smaller ones (not sure what size, they were lying around) to hold the laser. Once installed, I used a hex wrench to align the laser. After tweaking, the laser shines dead center of my scope's view. At night the beam is visible and can be used to quickly and accurately aim.