Gen 3 vs. Gen 4 in a Glock 23 - Boil it down

Discussion in 'Glock Forum' started by Chukar, Mar 22, 2012.

  1. Chukar

    Chukar New Member

    I'm on the hunt for a 23 and have a line on the Gen 3. This will be my first Glock and I'm doing all kinds of reading about this stuff, but need some boiled down intel. I'm wanting to be sure that I understand the "issues" with each generation. I know that the G4 had some issues with ejection that was addressed.

    Let me know what you know...Reloads, lights, sights, ammo, etc. Thanks all.
  2. chadsaalfrank

    chadsaalfrank New Member

    I have the 23 g4 and have not had a single problem. I'm saying there are not issues with the ejectors in a limited number of them but I don't think its as wide spread as most talk about. There are some g3's out there with the same issues as well. Either way if you would happen to get a bad ejector glock will replace it free of charge. I'm a huge fame of trijicon HD night sights! Just installed my first set on my edc 27. Glocks will shoot anything you feed them! I buy whatever is cheepest buy the case for target/range and I use hydra-shock by federal for personal protection. Im not a big fan of replacing alot of parts, the one thing I do to every glock is throw in a ghost 3.5 trigger. Hope this is somewhat helpful, these are just my personal opinions.

  3. voyager4520

    voyager4520 New Member

    That wasn't just a Gen4 issue. The issue existed in a small percentage of recent production Gen3 and Gen4 9/40/357 models. For some people, simply replacing the extractor with a new one fixes it, for other people the new ejector is required. My Gen3 G27 had the issue, I used an extractor in it from my G23 which ejected fine, and it made very little difference. What fixed the issue was getting the new ejector for it.

    The new ejector is now standard in Gen4's, but the Gen3's still use the old ejectors. In Gen4's that have the new ejector, it's incredibly uncommon to hear that they have the ejection issue now, and when they do replacing the extractor fixes it. The issue is still being reported in the newest Gen3's though.

    The old ejectors are not defective in any way, and you don't need to upgrade to the newest version unless you experience the ejection problem. The new ejectors were made to change ejection enough to fix the erratic ejection issue.

    If you get a Gen3 and it has the ejection issue, what you'll need to do is get the new ejector which can be found in the newest Gen4 trigger housings, remove that ejector from the Gen4 trigger housing and install it into your Gen3 trigger housing to use in your Gen3. If you still experience erratic ejection with the new ejector, that means the extractor is out-of-spec. Keep the new ejector in the gun and replace the extractor.
    (So far only MidwayUSA and have been confirmed to have the Gen4 9mm trigger housing w/30274 ejector. No retailer has yet been confirmed to have the Gen4 .40 trigger housing w/28926 ejector.)

    If you get a Gen4, make sure to get one that already has the new ejector in it. Put at least 100 rounds through it, and if you experience erratic ejection after 100 rounds, replace the extractor.
    Don't shoot reloads unless you made them yourself and are confident in their quality. Don't shoot unjacketed lead bullets through the factory barrel because it uses polygonal rifling. If you want to shoot unjacketed lead bullets, get an aftermarket barrel that has traditional rifling.

    Some Gen3 .40 models experienced failures to feed with a light attached to the rail. The solution to this problem is either to remove the light from the rail, or to use stronger magazine springs. In some cases stronger magazine springs would not solve the issue, so you'd just have to remove the light from the rail. It's thought to be caused by the frame flexing less during recoil because the light is attached, and because the frame isn't absorbing as much energy by flexing, that energy is translated into faster slide velocity which is too fast for the stock magazine springs.

    The failure to feed with light attached issue has not been reported even once in a Gen4 .40, the dual recoil spring assembly seems to keep slide velocity much more constant.

    In my .40 Glocks I shoot American Eagle and Speer Lawman for range ammo and I've never had a problem with either.
    Last edited: Mar 23, 2012
  4. Chukar

    Chukar New Member

    Thank you very much guys. Just what I was looking for.

    Correct me if I'm wrong, gen 3 grips were a one-size while the gen 4 has options. This is specifically dealing with the back straps. With the G4 and the small, med, & large back strap, which one would compare the best to the G3 grip?
  5. chadsaalfrank

    chadsaalfrank New Member

    I prefer the one that comes standard on the g4. I have never changed any of my backstraps.
  6. voyager4520

    voyager4520 New Member

    The Gen4 comes with two add-on backstraps. One is marked "M" for medium, the other is marked "L" for Large. The Gen4 grip with "M" backstrap is closest to the Gen3 grip.

    Each backstrap adds about 2mm thickness to the backstrap. So without any backstraps attached, the Gen4 grip is 2mm thinner from frontstrap to backstrap than the Gen3 grip.
  7. Chukar

    Chukar New Member

    Perfect, thanks all!