Glock 17 gen4 Endurance Test: Week 15

1-Jul-11 – 22:32 by ToddG
22,817 rounds 6 stoppages
(+1 w/non-LCI extractor)
0 malfunctions 0 parts breakages

The G17 has been shot quite a bit since the last update, including three grueling days in 100+ degree Oklahoma heat. It’s gone 8,525 rounds since the last time it was cleaned, too, but no problems to report.

The big news, of course, is that the G17 broke the 20,000 round point. That’s an important milestone because 20,000 is normally seen as an adequate service life in the handgun industry. So while 20,000 may not sound like much to fans of the Glock, it’s a pretty significant number to people at, for example, Glock Inc.

Another major milestone was passed this week: “the gadget” prototype has now gone over 15,000 rounds and appears to be in perfect condition.

For the past two days (and a little over 2,000 rounds), I’ve had the new dot connector (or “dot-con” as I like to call it) installed in the test gun. Trigger pull is 5 pounds 1 ounce, just about half a pound less than with the standard connector. I like the break. It has more of a roll to it than the standard connector, very smooth and less prone to anticipation. However, it feels like the reset may be a little bit longer.¬†Five pounds is skating the edge of what I consider responsible for a carry gun, but there is no denying this is the most shootable combination I’ve put in the gun so far.

I tried the dot-con and a NY1 trigger spring at the range and while I don’t have an actual measurement, I’d estimate the pull weight to be seven billion pounds. OK, it was probably more like eight and a half pounds. Could you live with it? Yes. Would you want to? Probably not.

The Trijicon HD sights are still running well. Today on a walkback drill using 2″ circles I got to 14yd before falling out (and 13yd SHO, 10yd WHO). Being able to hop from max speed with the big orange dot to max precision with the sharp top edge is nice. But it’s also easy to find a middle ground without too much effort. For example, today I shot a Triple Six in 9.62 with one C-zone hit for a total score of 9.82. The last time I shot the drill (week 20 of the HK45 test) I scored 11.45 so the improvement is significant.

Next up for the G17 is a long overdue cleaning as well as the 22,500 maintenance which will include changing the recoil assembly, slide lock spring, trigger return spring, striker spring, and magazine catch spring. After that, the pistol should see two or three days at the range before next week’s update.

Train hard & stay safe! ToddG

Previous Glock 17 gen4 Endurance Test posts at

  1. 3 Responses to “Glock 17 gen4 Endurance Test: Week 15”

  2. 20K rounds and the RSAs haven’t come apart and the “hogged out” frame is holding up.

    I acquired a dot connector and put it into a Gen 3 actually. It should I guess be heavier than a minus but I don’t think I could tell it apart from a minus (again in a Gen 3).

    By JoeC on Jul 3, 2011

  3. As a side note on the Gen 4 triggers, the other day I finally removed (filed off) the bump on the side of the trigger bar and wow, what a huge difference that made in the trigger pull. It went from heavy and sluggish to as good as a Glock trigger gets. About 800rds were on the Gen4 before that. If you replaced the trigger bar with another pre Gen 4 design to eliminate that bump, you would also eliminate the angle correction on the trigger bar for the trigger reset spring.

    By Emanuel Plotnikov on Jul 3, 2011

  4. Todd,
    Any further observations about dot con reset? I have now 450 rds through a Gen 3 with the dot con and I did not perceive the reset to be longer, but I’m shooting and not actually measuring.

    By JoeC on Jul 5, 2011

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