Quote:
Originally Posted by WhatTheWho
Venting gas is usually due to either a jammed flow valve on the mag, or the floating valve inside the blowback chamber having problems/issue/misaligned/broken (a very common problem). I assume you have another mag to test as seen in your picture, then it's simple enough to single out which problem it is.
If there are no issue with these parts, it could be issues with your hammer sear not locking back the hammer which would lead to the flow valve still being pressed even after blowback. Or, it's simply something jamming the slide's blowback, which is usually caused by a loose philips screw which holds the chamber block to the slide.
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Hmm, I tightened the Phillips screw in the back- both mags tested with the same results. At least it happened only when the mag was close to empty.
Thanks, though- I'll look into the rest.