Starship Troopers grenade

thingiverse

This is designed to be easily printed with very little support needed. You may want to use a raft on the smaller parts and orient the parts for your purposes. There are two alignment blocks to put inside to help align the two halves of the main body. The charging handle goes into a slot at the bottom of the "topper" and the "button" on top of that. Have fun, kill some bugs.