Print settings- print it with 60 perimeters this way assuring 100% infill and 0.2mm layer height, read safety information below text. Check place on face feature for first layer stability! It was costly to develop this- if You sell alot of them please consider buying this stl again to support further projects as this one, thank You. Original design by me. And it cost me 760 euros to develop (this tool) including 10 euros what I spent in materials, very tiny object what took 3 entire weeks (inluding AR 15 unloading tool) to acomplish going trough many prototypes and almoust giving up in making 3in1 (all ammo lenghts) universal unloader. Main dificulties were anti tilting rails in AR magazines and diffrent length of rounds, when tilting theyr behaviour changes drasticly and it was hard to get rid of constant blockages. On AR mags it is not possible to unload magazine if in it's design is anti tilting rails, thaswhy it takes 4 seconds to unload. I saw how rounds are pushed out holding in fingers backside of an round and decided to replicate this into reliable, repeatable stl file. I have loaded and unloaded more than 6000 rounds and item still holds up, with being this convinced about my product I now release this stl for users. Mainly I made this to support NATO troops- so that they could unload quickly theyr magazines (if not used) and save time to learn other things defending theyr countries and democracy.

Important! Safety information: when unloading hold palm of hand to catch rounds, this way ensuring not too fast unloading when live rounds are sent flying and can hit something sharp & detonate thatswhy unloading in hat using palm braking (anyway 6 seconds to unload) is optimal. Unload quickly, but safely, I demonstrate how to unload correctly at this video: https://youtu.be/sWl6TwkIA3I?t=209