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M1911 MK1 Poor Gas Performance


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#1 Crass007



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Posted 11 January 2014 - 08:05 PM

I just purchased 2 New m1911 MK1's
Canadian Versions with 378 FPS.
Both have the newer Hi Capacity magazines.

On both I only get 3 to 7 rounds before they run out of gas , I have tried
both Green gas and propane, both new bottles and it still does the same on both.
I am holding the mag upside down and and pressing the can down for about 10 to 30 secs,
and that is all i get 3 to 7 rounds , I have tried using my portable AI gas can and still the same ,
I have clean and lubricated them , Never had this problem with other Gas guns.
Any ideas ? Find it hard to believe 2 new guns would be defective in the same manner.

#2 SR105



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Posted 21 January 2014 - 04:55 PM

The vast majority of 1911's that I have come across in the tech center that have poor gas efficiency typically have something wrong with the cylinder and supporting parts. The most likely culprit is the cup seal. Try applying oil and let it sit for a day so that it can soak in the oil and become spongy again. If that doesn't work then it might be the magazine catch not holding the magazine where it should be and gas is escaping between the magazine and the cylinder. Hopefully oil will be enough to fix your issue. If not then keep providing details and we'll do our best to help you.

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