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Old September 28th, 2006, 17:10   #3
Join Date: Mar 2005
Location: MB
My TG6 Thumper grenade uses the same principle as yours though it uses different materials and a different method of gas release. The CO2 cartridge is pierced upon insertion into the device and the gas is held captive by a valve in the "spoon". When the C-clip is removed the valve opens, the gas acts against a plastic diaphragm and causes it to burst. I've filled the diaphragm with BBs and it creates an impressive spread for being a one-ended design. I've shown the thing to a lot of people and they've expressed great interest in it, until I tell them what it costs.
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