Functional 40mm Airsoft Grenade

thingiverse

A working 40mm airsoft grenade that shoots up to 9 BBs for close range. All you need is a screw (any...) and a rubber band. First, glue "bolt" on the bottom side of "slider", otherwise some BBs will remain in the grenade after firing. Now, take up to 5 rubber bands of at least 5-10 cm and push both ends through the holes in "slider". Afterwards, mount "slider" on "inner" and push the ends through the corresponding holes on "inner". Do not fix them with a knot yet! As a next step, mount "trigger" into "main" with a screw, be careful that the screw will not interfere with "slider" when completely pushed down. Now, place "inner" into "main" and push "slider" down with something until it clicks on "trigger" and stays there. Now, take each of the rubber bands, pull it until it cannot be pulled any more and fix it with a knot. Finally, add "cap" on the top and glue everything together or use some tape to fix this. The grenade will be activated by pushing the pin in the back into the body.