This is a magnetic holster system aimed at nerf blasters.
Non-3dprinted parts: -8mm dia x 3mm thick magnets with a countersunk hole. -M3x6mm heatset nuts (for Molle system) -M3x10mm countersunk screws (for Molle system) -M3x20mm-ish countersunk screws (for attaching magnets to the blaster)
On the blaster side you'll want to mount the magnets 95mm apart, on standoffs of at least 10mm.
The "Molle 10mm grid" and "Molle tong" are for attaching the system to a molle strap system
The freecad file is largely out of date, but i've included it because i have yet to redraw the catch body and spring in onshape.
onshape links: magnetic latch holdster - https://cad.onshape.com/documents/bbf0e56999bfb314db37fac6/w/d0b144e54dce8bddc263eb60/e/c6c9171851a1f2d7152fca6b
molle tong - https://cad.onshape.com/documents/cd699ac75f3e97af2bd8d1b9/w/cdb6f1ca175aef045062fca1/e/4fbf3e8fb140f9d062f5e6b3
molle 10mm grid - https://cad.onshape.com/documents/7796ec6cc8c516f694f6c19e/w/2557961ee11d08f1c14cba6b/e/a04ab4d68b568de439fa2d07