Rain BBs onto your enemies with the new Self Resetting Grenade Shell from SHS. With over a 10 foot spread diameter at 20 feet, you will shower 72 rounds of plastic onto anything standing in your way. This grenade shell operates on green gas/propane which is filled directly into the shell itself. Constructed fully from CNC aluminum, this grenade shell can easily withstand hard impacts. What separates this grenade shell from the competition, is the Self Resetting feature that greatly helps during heavy battle. Do yourself a favor and pick up the new Self Resetting Grenade Shell for your 40mm launcher today.