A helpful video from Chiinnature for those who looking for tips on how to maintain or fix their airsoft gas grenade shells made for grenade launchers... "How to disassemble airsoft grenade launcher shells and repair them? Easy as 1-2-3. You can go through this guide and learn how to fix all types of airsoft grenade shells on the market today. Don't forget that your grenade can also run on green gas, co2 or HPA (regulated to proper pressure). Enjoy the big bang!"