This is a remix of a remix. Johnthedog20 posted his M48 Stun Grenade that he modified to use Otorzone’s Grenade Container Top mechanism. I shortened Jonthedog20’s design and added alignment spacer/washers to make assembly easier. I printed the Top and EjectorLever files in resin and the rest in PLA. I found Tension Springs, Split Rings, and Cotter Pins on Amazon. I’m sure I could have used any old spring and a paper clip in a pinch.

Original M48 Stun Grenade Files: https://www.thingiverse.com/thing:6011255 Original Top Spring Mechanism: https://www.thingiverse.com/thing:5912403 20mm Tension Springs: https://a.co/d/9lszSVc 32mm Split Rings: https://a.co/d/5W1s5bn 20mm Cotter Pins: https://a.co/d/bsfO2Zu