Bought a Pink Rhino Laser Cartrige for dry-fire training at home, but the box it came in was a pain to work with, and I needed a better one, so I whipped up a quick box to contain both the cartrige and the batteries separately.
Uses two 8x3mm magnets to stay closed and one or two M3 bolts as a hinge (depending on lenght)
Made for the Pink Rhino Cartrige, but I belive it should fit several others as well
Added a bottom piece with 0.2 larger holes incase the tolerances of your printer is not around the same as mine (if to large glue might be required for the magnet.)
The author marked this model as their own original creation.