Glock Performance Trigger in Gen 3 frame?

March 23, 2025, 11:27 AM

BennerP220

Yes, it is a flat faced trigger shoe.

quote:
Originally posted by paperchasin:
Does the GPT come with a flat trigger? From the pics I've seen, it appears to be different.

March 23, 2025, 11:37 AM

paperchasin

quote:
Originally posted by BennerP220:
Yes, it is a flat faced trigger shoe.

quote:
Originally posted by paperchasin:
Does the GPT come with a flat trigger? From the pics I've seen, it appears to be different.

Thanks for the prompt reply and confirmation! Looks like I will give this a shot in my Gen3 as well.

March 23, 2025, 12:55 PM

BennerP220

You won’t regret it. Now I just wish Glock made one for my 43X.

March 25, 2025, 05:48 PM

BennerP220

Well, that’s a wrap. My boy and I just got back from the range and testing my G26 with the GPT. It performed perfectly. Great addition to an already great pistol.

March 26, 2025, 09:34 AM

paperchasin

Thanks for the review! Can you comment on the trigger shoe? It appears to be slightly flatter? Any thoughts on swapping it out for a flat trigger shoe?

March 26, 2025, 09:44 AM

BennerP220

The trigger shoe is flat faced. It’s hard to see looking at it. When you feel it you’ll know what I mean. I thought the same thing when I started looking at them.

April 29, 2025, 09:50 PM

paperchasin

Hey guys. So since you can modify a GPT to fit in a Gen3, is it safe to say that one can also make the same modifications to a factory Gen5 trigger to make it work in a Gen3? Trim the feet on the housing and use a Gen5 slide back plate?

April 29, 2025, 10:04 PM

parabellum

Probably so

April 30, 2025, 09:02 AM

paperchasin

quote:
Originally posted by parabellum:
Probably so

Thanks Para. I understand that the Performance Trigger is nice, but do you have any experience with a factory Gen 5 trigger? I keep hearing how good it is "out of the box", so I figured it might be a decent "upgrade" to my factory Gen 3 trigger.

April 30, 2025, 09:35 AM

parabellum

In my experience, that's just a bunch of hype. Gen 5 triggers have the same characteristics of the previous generations. Glock triggers are like snowflakes- no two are exactly alike.

If your intent is to improve the trigger of your pistol, start by polishing the trigger bar and the firing pin safety plunger. Search for "Glock .25 cent trigger job" on youtube. Johnny Glocks channel on youtube offers a wealth of advice but you have to invest some time to go though all the videos.

But, any change you effect will be slight. Don't screw with the springs. Experimenting with various connectors might be the answer for you.

To effect a significant change, you'll need to consider the GPT or the Timney trigger. These are not for everyone.

April 30, 2025, 10:32 AM

Jim Watson

I have been underwhelmed by the Timney and GPT. I think a well honed standard action, call it a 50 cent trigger job, is at least as good.

April 30, 2025, 11:19 AM

parabellum

The GPT is, in terms of the trigger break, far better than the stock Glock system, polishing or no; of the four GPTs I have installed, only one of them has any detectable creep, and to discern it, you have to press the trigger very slowly. The GPT release is slightly more crisp than the Walther PPQ stock trigger (which also suffers from the "snowflake" phenomenon.) However, Walther's Dynamic Performance Trigger beats them all, by a good measure.

I've never handled or tried the Timney trigger for Glock.

April 30, 2025, 11:10 PM

paperchasin

My main concern regarding the GPT is it's reliability. Would you guys feel comfortable with the GPT installer in your EDC?

April 30, 2025, 11:41 PM

parabellum

I've not had any issues with it but I think limp-wristing might cause FTF problems more readily with the GPT than with the standard trigger.

When retracting the slide on a Glock which has the GPT installed, and the striker is uncocked, there is a "bump" you can feel as the tang of the striker rides past the cruciform plate of the trigger bar.

For some reason, the shorter the slide, the more pronounced is the "bump" I feel when retracting the slide (if the striker is uncocked). G17, feel it a bit. G19, feel it a bit more. G26, it's quite prominent. So, the slide is encountering resistance during the extraction phase of the firing cycle which is not present with the standard trigger and I can see this causing issues with pistols that are not gripped firmly when firing.

Combine this with the comments from shooters that the Gen 5 G26 needs to have its RSA "broken in" by leaving the slide locked back for a few days and then pounding the gun with a couple of hundred rounds of +P or NATO-spec ammunition, and, well, you're just going to have to try it out.

Additionally, check out Glock's GPT Insert Sheet

quote:
To ensure optimal performance, GLOCK recommends lubrication using a quality CLP oil or equivalent prior to first use, and before and after each subsequent use of the GLOCK Performance Trigger. When the trigger is not used on a regular basis, but is a part of your everyday carry, lubrication should be applied every three months.

Before and after each use, and every three months!

All of this is to say that you'll just have to try it for yourself, but I can tell you that right now, I don't have the GPT installed in my primary carry gun. I know what works very well for me, and that's the stock Glock trigger.

Hey, you asked!

I am not a gunsmith or a 10,000 rounds a month competition shooter, so, take it for what it's worth- merely my observations.

May 01, 2025, 09:03 AM

paperchasin

quote:
Originally posted by parabellum:
I've not had any issues with it but I think limp-wristing might cause FTF problems more readily with the GPT than with the standard trigger.

When retracting the slide on a Glock which has the GPT installed, and the striker is uncocked, there is a "bump" you can feel as the tang of the striker rides past the cruciform plate of the trigger bar.

For some reason, the shorter the slide, the more pronounced is the "bump" I feel when retracting the slide (if the striker is uncocked). G17, feel it a bit. G19, feel it a bit more. G26, it's quite prominent. So, the slide is encountering resistance during the extraction phase of the firing cycle which is not present with the standard trigger and I can see this causing issues with pistols that are not gripped firmly when firing.

Combine this with the comments from shooters that the Gen 5 G26 needs to have its RSA "broken in" by leaving the slide locked back for a few days and then pounding the gun with a couple of hundred rounds of +P or NATO-spec ammunition, and, well, you're just going to have to try it out.

Additionally, check out Glock's GPT Insert Sheet
quote:
To ensure optimal performance, GLOCK recommends lubrication using a quality CLP oil or equivalent prior to first use, and before and after each subsequent use of the GLOCK Performance Trigger. When the trigger is not used on a regular basis, but is a part of your everyday carry, lubrication should be applied every three months.
Before and after each use, and every three months!

All of this is to say that you'll just have to try it for yourself, but I can tell you that right now, I don't have the GPT installed in my primary carry gun. I know what works very well for me, and that's the stock Glock trigger.

Hey, you asked!

I am not a gunsmith or a 10,000 rounds a month competition shooter, so, take it for what it's worth- merely my observations.

Really appreciate the in-depth response. Interesting to hear about your experiences with the shorter slides!

I was able to get the GPT installed in my Gen 3 Glock 19 and I think it was an improvement. But I did also do the polish job on my factory trigger and it wasn't a bad trigger at all.

When I looked over the GPT manual, I saw exactly what you quoted and hence, my concerns about EDC and reliability of the GPT, and possibly running a factory Gen 5 trigger setup to address these concerns.

I think I will remove the GPT and replace it with my polished factory trigger. Thanks again for your input!