CZ 75 9mm double stack magazine loader- all lengths

thingiverse

This is designed to simplify loading CZ 9mm double stack magazines but you could download and alter dimensions to work with most any magazine. I printed it with PLA using 7 layers for perimeters/top/bottom with 100% infill and supports as needed. Dry fit before assembly to ensure the slide moves freely, your springs aren't too short(can be stretched) or too long(need shorter springs), and that the locking pin fits its hole perfectly. If necessary, sand off zits and support material leftovers to ensure smooth function. Ensure the slide and spring cavity didn't get imperfections internally that will cause binding/jamming and that you remove any support structure that might keep the slide from moving smoothly. My locking pin's hole needed to be slightly filed for the pin to fit properly. If you file it too big, you could just superglue the peg into place after assembly. To assemble, insert two strongly stretched springs from retractable pens into each round hole. Using the end of the slide's pegs, push the springs downward until the locking pin has clearance to be pushed into place easily. Leave the excess pin sticking out of the front, to help line up your bullets perfectly.