Airsoft Grenade Mode II
thingiverse
its quite robust you can figure it out use your own settings you probably blow it up anyways. You can add BB inside of the grenade. To get it work youl need Matches and match striker and firecrackers. 1. add BB in shell 2. Add firecracker 3. Screw the cap on so the ignitor is in the middle hole. 4. Slip the striker from match box in the cap it should go quite far. 5. push few matches in on top of the hole where the striker is and feel if it has good contact. It should be ready to make a bang when you pull striker out.
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