Reserecting this thread just because I bought a G&G Threaded Barrel for my KSC G19 with metal slide and the works for upgrades. Anyways, It cycles funny when pulling on the slide, but when I shoot it the slide jams full forward and empties the mag of gas. I read that filling is in order, but where exactly? Top, one of the angled parts on the bottom.................. Working on this for a couple hours tonight trying to figure out where it's screwing up, but I don't want to file every single surface on it to find out it's screwed for good.
Thanks.
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