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KWA Magpul FPG Spew Gas


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Old October 7th, 2017, 02:03   #1
Freeze's Avatar
Join Date: Feb 2011
Location: Mississauga
KWA Magpul FPG Spew Gas

I have a KWA Magpul FPG that I've transplanted KSC JP G17 internals into. Right now, I have a problem where the gun will fire, but it'll keep spewing gas after the shot.

I think it has something to do with the possibility of the slide not going all the way back thus not resetting the hammer, but I honestly have no idea right now after tinkering with it for almost 3 hours. (I've tried racking the slide slightly back after the first shot and then when I release it, it pushes the valve to release more gas again)

Any help would be appreciated.

EDIT: It's apparently what's called short stroking, but it's not going back far enough to catch when it's empty and that half cocks the hammer, causing the problem. I haven't actaulyl short stroked it in any way intentionally.

Last edited by Freeze; October 7th, 2017 at 12:39..
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Old November 9th, 2017, 16:53   #2
Join Date: Aug 2003
Location: Vancouver, BC
Make sure the floating valve inside the nozzle isn't broken, and the two nozzle return springs aren't damaged.

Also lube/grease it up wherever parts brush up against each other.
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Old November 11th, 2017, 14:45   #3
Join Date: Apr 2016
Do you have FPGs nozzle? Or you have used the original KSC Glocks one?

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