Was struggling to find a grenade I was liking. So I designed my own based on some models I found online.
Spring to push off Safety Lever
Real looking safety pin
Easy to print
What you will need
Cotter Pin 3/32”x1”
Key Chain Ring
Place on print bed as shown in the photo
Place Pen Spring into the Handle Holder/Fuse FIRST before screwing on the Top Ball/Body. See photo: Pen spring will be held into place by the threads from the Top Ball/Body and the Handle Holder/Fuse.