Need Help. Glock 17 will not return to battery

JonJonM

JonJonM

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Hey all, I am hoping some one experienced with tinkering on Glocks could help me out. Here's my problem:

When I pull the trigger and keep it depressed, first round goes off no problem, while I am still holding the trigger down the slide goes forward but gets stuck just a little bit back and does not return to battery. I then have to push the slide a little bit forward to get it into battery.

At home, I tried it dry firing and I get the same issues. If I keep the trigger depressed while racking the slide the slide gets caught and won't return to battery. when I release my finger the slide then moves forward into battery. I have been trying to ride the slide forward to feel if it's getting caught and it feels like its getting stuck up on something. Here's where I am so far:

It's a Glock 17 gen 4 But it has an after market Zev Spartan slide. And it has an Agency barrel and an Agency trigger (this is a polished glock trigger bar and polished Glock Minus connector with Agency trigger shoe.) . The slide has been cerakoted, This is when I started to have this issue, after the cerakote.

I took it apart and noticed right away that it seems like the trigger bar is getting caught in the slide or hanging up on the safety plunger. (see pics below) You can visibly see some wear right infront of the plunger on the slide. I checked the trigger bar but doesn't seem like its wearing abnormally. It has to be the portion that hits the plunger I think. Next step:

I took the whole thing apart every single part and cleaned everything checked all parts and springs. Put it all back together and same issue. Next, took it all apart and cleaned everything again this time I tried it with the original factory trigger and connector. Same issue again:mad:

Next I tried it with the original trigger bar, connector and barrel. Still gets hung up when returning to battery while the trigger is depressed.

I'm at the end of my options I am not sure what else to do. I have been reading all over online and some say that rails on the frame could be out of spec. some say you have to take material off, ever so slightly, from the trigger bar where it hits the plunger, others say get a polished high end safety plunger. I feel like this area has to be whats causing it to get stuck, the wear just doesn't look right. I circled the part in a picture so you can see what I mean. I saw others have this issue with the agency trigger and they fixed it just by putting in a new trigger but that doesn't work in my case. I might even be something else causing it but I really don't know. Am I right in thinking this area is the suspect? Any other things that could cause it? I don't know what could have caused it with the cerakote as it's such a thin coating and was done professionally. I have been trying to rack the slide a lot to see if everything just needs wearing in but that doesn't seem to work, if anything, it might even be feeling worse than before.

Any ideas or help would be greatly appreciated.

The part that may be the problem:
Izr1gS9.jpg


The wear that looks like the bar is getting hung up in the safety plunger, look at that streak infront of the plunger:
6CibE9M.jpg


This is how far the slide gets, then when I release the trigger the slide goes into battery:
1b1WAEf.jpg
 
Someone online also posted something about the different types of Glock trigger bars saying that stamped on them you can find, -1 or -1-. They say a -1- trigger bar may fix this issue. Any thoughts? My factory Glock one says -1 at the end not -1-
 
Could be just a bad angle, but the safety plunger doesnt look like its up all the way. Does the plunger move freely? Is the firing pin in the safe/locked position?
 
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I'm not sure if this is relevant, since there are no aftermarket parts in my pistol? I Cerakoted my G26 and while still using the factory parts, I had the trigger "hang up" or not re-set all the way forward? I disassembled and put it in the ultrasonic tank. Re-assembled, and it was G2G, I'm a Cerakote applicator and while not a "master" I didn't go "heavy" on the interior. If you think your competent, disassemble it and give it a good cleaning?
 
I would say take it to gunsmith too but sometimes the best way to learn is self-discovery ;)

"This is when I started to have this issue, after the cerakote. " So I assume you ran this gun enough before cerakote with exactly same parts and never experienced any problem? Don't really know your gun's history so I have to make some assumption it was running perfectly before that. I have Glock17 that is full factory and also have Glock17 that is all Zev modded with every available part. I never had any major issue with the modded one but it is good to have a factory for reference at first.

Due to limited info I would try these

1) Is that the only barrel you got? Do you have a friend who owns a G17? Check for spacing after the cerakote on slide especially the top of slide.

2) With just the lower alone, check if you can forward+down press the circle part of your 1st pic you can be able to reset the trigger easily and you should be able to press the trigger and repeat this. Check trigger housing for any wobble or unsusal movement. Check your plastic rear pin for bent or movement.

3) Is your back plate secured and not sliding down? Have you fully pushed it up? Is so, take out the back plate of the slide. Remove the safety plunger rod and extractor. Leave just the free floating safety plunger with spring put the back plate on and test to see if you can reset that trigger now. Clean the entire firing pin assembly while you're at it. Remember to put the rod and extractor back when done.

4) While you're at it check the channel liner inside the firing pin hole shine a flash light into that and check visually. If it is cerakoted you must have replaced the channel liner inside right? Did you change that? Or the guy cerakoted for you changed that? That is not a part you can just take out and put back in so once it is out it must be replaced. If he cerakoted it and not told you about changing channel liner or replace it for you then you might need to replace it on your own. Not saying this should cause you that problem but...well... you never know.

That's what I can think of now but of course no guarantee will help at all but just trying to help... hope you will eventually solve your problem though.
 
lavino said:
I would say take it to gunsmith too but sometimes the best way to learn is self-discovery ;)

"This is when I started to have this issue, after the cerakote. " So I assume you ran this gun enough before cerakote with exactly same parts and never experienced any problem? Don't really know your gun's history so I have to make some assumption it was running perfectly before that. I have Glock17 that is full factory and also have Glock17 that is all Zev modded with every available part. I never had any major issue with the modded one but it is good to have a factory for reference at first.

Due to limited info I would try these

1) Is that the only barrel you got? Do you have a friend who owns a G17? Check for spacing after the cerakote on slide especially the top of slide.

2) With just the lower alone, check if you can forward+down press the circle part of your 1st pic you can be able to reset the trigger easily and you should be able to press the trigger and repeat this. Check trigger housing for any wobble or unsusal movement. Check your plastic rear pin for bent or movement.

3) Is your back plate secured and not sliding down? Have you fully pushed it up? Is so, take out the back plate of the slide. Remove the safety plunger rod and extractor. Leave just the free floating safety plunger with spring put the back plate on and test to see if you can reset that trigger now. Clean the entire firing pin assembly while you're at it. Remember to put the rod and extractor back when done.

4) While you're at it check the channel liner inside the firing pin hole shine a flash light into that and check visually. If it is cerakoted you must have replaced the channel liner inside right? Did you change that? Or the guy cerakoted for you changed that? That is not a part you can just take out and put back in so once it is out it must be replaced. If he cerakoted it and not told you about changing channel liner or replace it for you then you might need to replace it on your own. Not saying this should cause you that problem but...well... you never know.

That's what I can think of now but of course no guarantee will help at all but just trying to help... hope you will eventually solve your problem though.
Click to expand...

Hey thanks for the tips. It has a new channel liner installed and the backplate is in properly. I checked with my glock factory barrel and it does the same thing. The trigger can be reset fine with the slode off. I may try putting it together without the barrel and see if I ca feel for thr issue. Im sure that the trigger is causing the problem. I might try to find a new safety plaunger and see if that helps. The slide had around 400 rounds through it before the cerakote and worked well.
 
Looks like the trigger bar is catching the plunger when the slide cycles. Why only after the cerakote job, I dont know but maybe if you have a half height cover plate, then you can see what's going on once the trigger is pulled and you cycle the slide.
 
frank223 said:
Looks like the trigger bar is catching the plunger when the slide cycles. Why only after the cerakote job, I dont know but maybe if you have a half height cover plate, then you can see what's going on once the trigger is pulled and you cycle the slide.
Click to expand...
Hey there I think that's exactly whats going on. I took out the plunger Only for testing with dry fire and it seems like the issue is gone. So it must be that area causing the problem. I wish I had a half plate cover or some spare parts I will mess around with it a little bit more and maybe send it away to be looked at
 
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