Glock 5th Gen Double Feeding Issue.

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GDavies

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Hello Everyone

I got myself a new Glock 17 5th gen a few months ago, I have taken it to the range twice now and I'm having nothing but failure to extract and double feeds with the mags that came with the handgun. I would say its having one to two double feeds per mag. Has anyone been having issue with the new Glock 5th gen 10 round mags as well ? I have never had issues with 3rd or 4th gen Glocks when I have shot friends pistols before...

I did some looking online and it seems many people in California are having issue with there new 5th gen 10 round mags as well. They have a new follower with a hump on the back that seems to be the culprit. Its something about how the bullet tips down a little bit on the new follower before trying to feed the next round making it so you get failures to extract and double feeds.

Does anyone have any tips or tricks on fixing this issue? Has anyone seen this before ?

Thank You
Greg
 
All my 10rd mags from gen2-4 have had excess plastic flashing inside from the molding process, try pushing the follower down with a plastic ruler or something similar and see if it binds on the way back up. FTE sounds like a gun problem more than mag problem, have you oiled the gun since purchase?
 
Failure to extract / double feed should not be an issues with the mag, rather it could be an extractor issue or a ammo issue. How are you clearing the malfunction? Are you dropping the mag and racking the slide several times? Or is that failing to extract the case and are you having to use a tool to remove the case?
 
How many different kinds of factory ammunition have exibited these failures? Just one? More than one?
 
GDavies said:
Hello Everyone

I got myself a new Glock 17 5th gen a few months ago, I have taken it to the range twice now and I'm having nothing but failure to extract and double feeds with the mags that came with the handgun. I would say its having one to two double feeds per mag. Has anyone been having issue with the new Glock 5th gen 10 round mags as well ? I have never had issues with 3rd or 4th gen Glocks when I have shot friends pistols before...

I did some looking online and it seems many people in California are having issue with there new 5th gen 10 round mags as well. They have a new follower with a hump on the back that seems to be the culprit. Its something about how the bullet tips down a little bit on the new follower before trying to feed the next round making it so you get failures to extract and double feeds.

Does anyone have any tips or tricks on fixing this issue? Has anyone seen this before ?

Thank You
Greg
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Why would people in California buy Gen 5 Glock mags when Gen 4 and 5 Glocks are generally prohibited to be purchased except law enforcement and a few other select groups in California?
 
jperos said:
Why would people in California buy Gen 5 Glock mags when Gen 4 and 5 Glocks are generally prohibited to be purchased except law enforcement and a few other select groups in California?
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Cause its probably available at the gun store. But I see no merit to the claim that the Gen5 mags are faulty.
 
To clear the double feeds I have been locking the slid back, dropping the mag and racking the slid back. I did have a bad failure to extract on the last round I shot out of the gun though.

For ammo I'm using my reloads, 124 gr FMJ with 3.9 gr of Tight group and Winchester primers. I'm going to get a box of factory ammo to test out. Its just odd because I have shot my reload using this recipe in several Glocks before with no issue.
 
I haven’t had this issue with any of my glock Gen 5s. Any aftermarket parts? What does your extractor look like? Are you treating the slide like it’s your first date when you rack it?
 
Have a new 17 gen 5. Prob 3-400 rounds through it now. I had a couple double feed jams and failure to feeds my last time out. It was with the CCI blazer aluminum case ammo. Once I was back into the winchester brass casing stuff, all was good. I was using a mix of the Glock and Magpul magazines but never checked which mags had the problem.

Coincidence? I had noticed that a couple of the aluminum casing had a small dent in them from getting jammed trying to load mags with my ETS C.A.M speed loader. Not sure but that could have been the issue or if it is just breaking in or the mags but have exclusively used the Glock mags that came with it up to then with no problems. I think I will just stay away from aluminum case ammo, but will pay more attention in the future if it happens again.
 
I’ve been having the exact same problem with my brand new Glock 22 Gen 5 Mos. I’m not limp wristing either. I thought it was the Blazer brass ammo at first. But I’ve tried Federal, PMC, Sellier and Bellot and Remington also and it does it with all of them. The extractor is working properly. It seems like a feed ramp problem to me on mine. My mags are all factory Glock mags some Gen 5 and some Gen 4. It happens with all of the mags. So I don’t believe it is anything to do with the Gen 5 mags. None of the rounds were aluminum either. I only use brass. It didn’t matter how much ammo was in each mag either. It was happening with full mags or almost empty.
 
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GDavies said:
For ammo I'm using my reloads, 124 gr FMJ with 3.9 gr of Tight group and Winchester primers.
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That's pretty down low on the charts. Lee 2nd Ed doesn't even go below 4.1 for Titegroup under a 124.
Low impulse combined with a brand spankin' fresh recoil spring could be your culprit.
I built subsonic plinking 147s over 5.0 of Blue Dot for my Sub 2K which caused the same kind of grief in a brand new G34 (5) MOS.
After about 600 rounds, I tried the subsonics again in the Glock, and now they're running fine.
 
Ok was out today and out of the 100 rounds i shot there were a couple fail to fire and a couple double feeds. All with glock mags (that’s all I had out) and the white box Winchester ammo
 
OP, since your mags are new, try not to load them to full. Start with 7 or 8 rounds. If double feed persists, reduce to 4 or 5 round only. Test this out for a few session with factory ammo.

You may also try the above without shooting. Just load them up and manually rock the slide and let it slam home (obviously do this at range if you're using live ammo). See if this test also gives you the DF or FTE.

Report back and let us know.
 
Another possibility is the Recoil Spring. Since you have a new Gen5 they seem to have heavier recoil spring than previous Gen's to offset the missing Locking Block pin, and plus the fact you were using reload to begin with. By your reporting above it seems the DF and FTE were reduced after you switched to factory ammo. Keep shooting it to break it in. Or you can take out the mag and rock the slide back and forth while watching TV. Similar idea as if you were smoothing out a pump action shotgun. For this part you may walk the slide as you just want to loosen up the recoil spring not adding unnecessary wear to the slide and rail.
 
aka_ryan said:
Another possibility is the Recoil Spring. Since you have a new Gen5 they seem to have heavier recoil spring than previous Gen's to offset the missing Locking Block pin, and plus the fact you were using reload to begin with. By your reporting above it seems the DF and FTE were reduced after you switched to factory ammo. Keep shooting it to break it in. Or you can take out the mag and rock the slide back and forth while watching TV. Similar idea as if you were smoothing out a pump action shotgun. For this part you may walk the slide as you just want to loosen up the recoil spring not adding unnecessary wear to the slide and rail.
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I had my Glock 22 Gen 5 Mos out again today and still having failure to feeds. Using all factory ammo and numerous different brands to try. I also had 3 Gen 4 mags and 3 Gen 5 mags all factory Glocks. The gun worked flawlessly for around 30 shots. Then it all of a sudden would not feed rounds again. It didn’t matter if it was the first round to chamber or not. They just wouldn’t feed. I really believe with mine it’s a feed ramp problem because I took the gun apart and cleaned up around the feed ramp only and lightly oiled it there. Then it worked flawlessly again for another 30 or 40 shots before it started to happen again. So once again cleaned feed ramp and lightly oiled and of course it work perfectly again for around the same amount before happening again. I think I’m gonna try polishing the feed ramp next because I can almost guarantee at this point it will fix the problem I’m having constantly.
 
Jeff5316 said:
I had my Glock 22 Gen 5 Mos out again today and still having failure to feeds. Using all factory ammo and numerous different brands to try. I also had 3 Gen 4 mags and 3 Gen 5 mags all factory Glocks. The gun worked flawlessly for around 30 shots. Then it all of a sudden would not feed rounds again. It didn’t matter if it was the first round to chamber or not. They just wouldn’t feed. I really believe with mine it’s a feed ramp problem because I took the gun apart and cleaned up around the feed ramp only and lightly oiled it there. Then it worked flawlessly again for another 30 or 40 shots before it started to happen again. So once again cleaned feed ramp and lightly oiled and of course it work perfectly again for around the same amount before happening again. I think I’m gonna try polishing the feed ramp next because I can almost guarantee at this point it will fix the problem I’m having constantly.
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Your issue might be different than the OP's. I would start off with manually cycle the ammo next time you're in the range. Do it for 40+ rounds and see if you can replicate the FTF. If not, then probably not feed ramp issue. Try it first before you start polishing the ramp.
 
aka_ryan said:
Your issue might be different than the OP's. I would start off with manually cycle the ammo next time you're in the range. Do it for 40+ rounds and see if you can replicate the FTF. If not, then probably not feed ramp issue. Try it first before you start polishing the ramp.
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I actually already have tried that as well. When it starts to happen it doesn’t matter if I start with a full mag, half empty mag or manually load. It seems like the bullet will just push up over the feed ramp and jam causing the slide to stop moving and not chamber the round. When it starts to happen during firing. It will work fine then it will eject the spent casing but jam the live round every time after that. I only shoot brass and i thought it may be an ammo issue at first. But I’ve tried Blazer, Federal, Sellier and Bellot, PMC and Remington. It makes no difference what ammo I’m shooting. Once it starts to happen it will jam on every brand constantly until I clean and oil the feed ramp. I have a Glock 17 Gen 4 also and I’ve never had a single issue ever with any brand of ammo. I really don’t want to polish the ramp. But I’m not sure at this point really what other options I have other then throwing parts at it.
 
Ok that's very odd, may be you're right on the feed ramp then.

But first thing first, without introducing or mixing with other factors, can you replicate the issue without shooting the pistol at all? Start off with a cold barrel, clean off the ramp, but no oil, no shots fired, and just manually cycle it. I'm curious at how many rounds of manual cycling does it start to happen? Do it a few times to see if it's consistent that it starts at X number of rounds. As compared to shooting it after 30-40 rounds.
 
aka_ryan said:
Ok that's very odd, may be you're right on the feed ramp then.

But first thing first, without introducing or mixing with other factors, can you replicate the issue without shooting the pistol at all? Start off with a cold barrel, clean off the ramp, but no oil, no shots fired, and just manually cycle it. I'm curious at how many rounds of manual cycling does it start to happen? Do it a few times to see if it's consistent that it starts at X number of rounds. As compared to shooting it after 30-40 rounds.
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Yup I’ve had this problem basically since I purchased it new a couple of months ago. Sometimes it happens while I’m trying to chamber the first round of the day. Sometimes it happens after a few shots. The first day I used it i never had any issues at all. Today I noticed the trend of 30 to 40 shots before it started to happen. Like I said though once it starts to happen it just refuses to chamber a round regardless of brand being used. I’ am very new to Glock pistols also as this one is my first. But the Glock 17 Gen 4 I purchased new in august I’ve already fired roughly 2000 to 3000 rounds through it and never a single issue.
 
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