Hi,
Long time reader, first time poster.
I have a 1 year old Gen 4 G17 with about 2k rounds through it. I was attending a course on Sat and Sun and had some problems starting mid way through the second day. Gun ran flawlessly for about 600 rounds and all of a sudden, every 2-3 rounds I had a failure to feed/not going into battery. Tapping the slide forward fixed the malfunction.
I field stripped it to check it out, gave it a quick cleaning, and the problem persisted. Nothing looked out of place. I switched to another G17 and finished the day.
At home I completely disassembled it and thoroughly cleaned it to inspect. I didn't notice anything out of the ordinary until I started racking the slide after re-assembly. I don't have another Gen4 to compare it too (my Gen 3s are very smooth when manipulating the slide) but there is a lot of resistance for the first inch or so of pulling the slide back and unless I completely slingshot the slide. It won't go into battery when it starts to encounter a lot of resistance when the slide is 3/4" extended (see attached pic - note that this is without a magazine).
I'm assuming that the slide of an empty gen 4 G17 should be able return to the correct position even if riding the slide forward?
I've made the following, potentially relevant modifications to the gun:
-Ghost Connector Pro 3.3lb (fitted myself)
-The Gun Co Trigger (uses a polished stock trigger bar and their custom trigger shoe)
-Extra power striker spring
-The frame had a lot of work done by a pro (stippling, trigger guard cuts, and index cuts)
I replaced all of the trigger components with stock and the behavior is the same. I removed all of the trigger components and the slide cycles smoothly. I was thinking of trying another RSA but that likely wouldn't explain why the slide operation is so rough with the trigger components installed.
Maybe try another trigger housing?
Any ideas?
Help is appreciated. Or, please let me know of a great Glock smith in the San Francisco bay area if you have suggestions.
Thanks!