<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">
i don't think you guys understand fully what im trying to do<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
I do understand completely. You're going for a home made sim-fire gun. I'm just making sure you don't turn into the human torch, and your attitude is not convincing me that my fears are unjustified. Burning at the muzzle, if you have a gas leak at the chamber-side you can bet it'll still eventually ignite.
If you can, try to find one of the electric grill ignitors, the ones that typically run off of AAA batteries or the like and spark every half-second or so. I predict you'll have difficulties keeping the muzzle fire going with only a slow-firing piezo ignitor. This would also work best ergonomically, as you can mount the ignition button on the left side of the foreward stock and press it just before squeezing the blowgun.