Brian,
Both of these pistols have dipped extractors with different casting numbers. They both have the latest RSA's and latest ejector 30274 I believe. Thy are both gen 4 models. One is a black g19 and the other is an FDE G17.
From the start they both exhibited weak ejection. The Glock 19 moreso than the 17. The issue of weak ejection has been consistent until the g17 got an HRED, I'll come back to that in a min.
The g19 did not exhibit any stovepipes until after it hit a couple of thousand rounds. Mostly shooting Federal and AR 115 and 124gr.
After hit a couple of thousand rounds the pistol started stovepiping with both 115 and 124 grain ammo I described above. At this time it had a Surefire x300 attached so I removed it and after running around 150-200 rounds I noticed the pistol would still stovepipe and throw brass in my face intermittently but at a frequency which is unusual.
I replaced the extractor and extractor spring/plunged and the issue has subsided for the last 300 rounds. I have not shot the pistol much recently as I has transitioned over to my G17 as my primary EDC.
Now the G17 has exhibited relatively poor ejection but more annoyingly it likes to peg brass in my face. It has not started to stovepipe like the G19 but the poor ejection and brass to my face motivated me to try an HRED. This has helped throw the brass a little farther and with a little more force but the ejection pattern was still garbage and intermittently throws brass in various directions including 6'.
I tried a new Glock extractor with the HRED but issues persist.
The ammo for the g17 has been a good diet of 124 gr. S&B as well as federal 115 gr. issues persist with both ammo brands and various mags. I have about 8 mags for each pistol and they are all pretty new.
In terms of maintenance i clean the pistols after every range session. I make it a habit to strip down the slide and blow out any debris or fouling with That birchwood Casey gun scrubber for synthetic guns. I also blow out with a little air from my compressor if I gets nasty I the upper or lower.
I lube the guns lightly with Weaponshield CLP. I just transitioned the G17 over to froglube to see how that holds up but that's for another thread.
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