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Guns Modify P Mags MWS


Charlie36
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Has anyone got a fix for a GM P Mag MWS that only takes about 2 seconds of gas before stopping itself filing anymore? It shoots about 5-10 BBs before running out of gas, even though I have held the gas canister against the filler valve for 20 seconds 

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Have you tried venting as you fill? Briefly hold the knocker valve vent the gas and any air that has built up

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This thread is over three months old. Please be sure that your post is appropriate as it will revive this otherwise old (and possibly forgotten) topic.

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