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Posted: 9/12/2017 5:07:46 PM EDT
I dry fire a lot, particularly when I don't have access to a shooting range. Tonight was just like any other night. After a few "rounds" of dryfire practice, my slide locked up. It locked up really bad. I had to really yank the slide to get the action open. Here is what I found when I got the barrel out. I haven't shot this pistol since late June, and noticed no problems during the last firing. I'm too shocked to even be mad yet.
 Attached File Attached FileETA: Has anyone ever seen anything like this? It looks like the breech face cracked. I've never shot a single round over +p or +p+ through it. My best guess is that I've fired at most 7000 round through it, 3000 of them being in the last six months since I had the RMR installed. |
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Posted: 9/12/2017 5:09:54 PM EDT
[#1]
Not the first. Won't be the last.
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Posted: 9/12/2017 5:22:02 PM EDT
[#2]
Not my pic, but google has plenty of hits for Glock breech face cracking.
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Posted: 9/12/2017 5:22:34 PM EDT
[#3]
I am surprised you didn't notice the crack starting with your fastidious cleaning habits
How many dry fires do you have on it? without snap caps I assume? I would think in the 5 digits? But yes the striker slamming into the back of the breech face unsupported thousands of times Luckily it is a G-Lock they have a good reputation of fixing or at least replacing at cost... call em.... |
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Posted: 9/12/2017 5:22:34 PM EDT
[#4]
Looks like you will need to contact Glock and get in the mail back to them, and have them replace it..
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Posted: 9/12/2017 5:24:10 PM EDT
[#5]
Quote HistoryQuoted:
Looks like you will need to contact Glock and get in the mail back to them, and have them replace it.. |
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Posted: 9/12/2017 5:25:58 PM EDT
[#6]
I just started my reading on breech face cracks. It looks like this is a not uncommon issue for habitual dry firers. Don't know why I haven't heard of such problems before.
I guess I should email Glock now. Just hoping I'm not screwed because I had the slide milled for an RMR. 
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Posted: 9/12/2017 5:28:48 PM EDT
[#7]
Quote HistoryQuoted:
I guess I should email Glock now. Just hoping I'm not screwed because I had the slide milled for an RMR. |
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Posted: 9/12/2017 5:32:55 PM EDT
[#8]
Quote HistoryQuoted:
I bet they will only replace it with stock, but will keep my fingers crossed for you. |
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Posted: 9/12/2017 5:33:53 PM EDT
[#9]
Quote HistoryQuoted:
I am surprised you didn't notice the crack starting with your fastidious cleaning habits
How many dry fires do you have on it? without snap caps I assume? I would think in the 5 digits? But yes the striker slamming into the back of the breech face unsupported thousands of times Luckily it is a G-Lock they have a good reputation of fixing or at least replacing at cost... call em....
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Posted: 9/12/2017 6:09:50 PM EDT
[#10]
They might not replace at all with the slide being millded
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Posted: 9/12/2017 6:53:33 PM EDT
[#11]
Get some snap caps off Amazon or eBay and use for dryfire. They should take care of you.
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Posted: 9/12/2017 6:57:56 PM EDT
[#12]
Quote HistoryQuoted:
Get some snap caps off Amazon or eBay and use for dryfire. They should take care of you. 
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Posted: 9/13/2017 12:42:53 AM EDT
[#13]
Thanks for posting OP I've missed this as well, mental note buy some snap caps.
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Posted: 9/13/2017 11:07:21 AM EDT
[#14]
Little bit of JB Weld and it'll be fine...
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Posted: 9/13/2017 11:10:32 AM EDT
[#15]
So I have to dry fire to disassemble, but dry fire can cause my glock to self destruct?
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Posted: 9/13/2017 11:13:49 AM EDT
[#16]
Quote HistoryQuoted:
So I have to dry fire to disassemble, but dry fire can cause my glock to self destruct? |
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Posted: 9/13/2017 11:15:04 AM EDT
[#17]
Quote HistoryQuoted:
A lesson learned the hard way. |
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Posted: 9/13/2017 11:25:56 AM EDT
[#18]
Quote HistoryQuoted:
I obliterated the firing pin retaining roll pin my one of my CZ's dry firing since I have started using snap caps. 
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Posted: 9/13/2017 11:30:10 AM EDT
[#19]
Quote History |
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Posted: 9/13/2017 2:25:58 PM EDT
[#20]
Are you sure that's not just a chunk of carbon that's cracked?
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Posted: 9/13/2017 4:28:21 PM EDT
[#21]
Quote HistoryQuoted:
Are you sure that's not just a chunk of carbon that's cracked? |
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Posted: 9/13/2017 6:02:49 PM EDT
[#22]
Quote HistoryQuoted:
Are you sure that's not just a chunk of carbon that's cracked? 
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Posted: 9/13/2017 6:48:00 PM EDT
[#23]
Quote HistoryQuoted:
Impossible to tell; the OP is far too busy to spend 90 seconds cleaning his Glock. FAR too busy. 
 Attached File Attached File |
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Posted: 9/13/2017 6:50:25 PM EDT
[#24]
never heard of this before
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Posted: 9/13/2017 9:31:22 PM EDT
[#25]
Quote HistoryQuoted:
never heard of this before |
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Posted: 9/16/2017 2:19:27 PM EDT
[#26]
This happens when dry firing? If this is true then Glock SUCKS big time. Who cares if they make it right it still sucks.
Had my G19 since 1998 and lost interest to keep track of round count, I think it might be over 15k rds. If I had to guess how many times I dry fired it it's probably 2 or 3 times the amount of rds fired and not even an issue in 20 years. Never used the Snapcaps BS either. I only use Snapcaps for malfunction drills. |
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Posted: 9/16/2017 2:51:34 PM EDT
[#27]
Quote HistoryQuoted:
This happens when dry firing? If this is true then Glock SUCKS big time. Who cares if they make it right it still sucks. Had my G19 since 1998 and lost interest to keep track of round count, I think it might be over 15k rds. If I had to guess how many times I dry fired it it's probably 2 or 3 times the amount of rds fired and not even an issue in 20 years. Never used the Snapcaps BS either. I only use Snapcaps for malfunction drills. |
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Posted: 9/16/2017 5:27:45 PM EDT
[#28]
Quote HistoryQuoted:
Guess you won't be buying any Glocks. |
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Posted: 9/16/2017 6:04:58 PM EDT
[#29]
I'd like to see a Bigbore type test done on a new Gen5 to see how they stack up.
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Posted: 9/17/2017 11:36:25 AM EDT
[#30]
Quote HistoryQuoted:
I brushed it with CLP and a tooth brush just for you.
https://www.AR15.Com/media/mediaFiles/74831/20170913_183223-306817.JPG https://www.AR15.Com/media/mediaFiles/74831/20170913_183210-306816.JPG |
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Posted: 9/17/2017 11:40:38 AM EDT
[#31]
Quote HistoryQuoted:
IS the gun stock? |
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Posted: 9/17/2017 11:51:48 AM EDT
[#32]
Quote HistoryQuoted:
No, the slide has been milled for an RMR. However, all the slide internals are stock. |
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Posted: 9/17/2017 1:08:28 PM EDT
[#33]
Quote HistoryQuoted:
This is an anomaly. We teach dry fire to my agency and all in the state and I've never heard or seen this. Snap caps are not necessary (for the Glock). You will never create the same tortures on the gun by dry fire that you will get with an actual firing of a round of ammunition. Quote HistoryQuoted:
Quoted:
No, the slide has been milled for an RMR. However, all the slide internals are stock. |
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Posted: 9/17/2017 1:23:43 PM EDT
[#34]
I wouldn't call it an anomaly, as there have been quite a few reports of this. During actual firing the primer prevents the striker from slamming into the back of the breech face, just like a snap cap would. From the FAQ on Glock's site: "It is ok to dry fire your Glock pistol, but in situations where the pistol will be subjected to continuous sessions of dry firing, the use of a snap cap or dummy round is recommended."
Quote HistoryQuoted:
This is an anomaly. We teach dry fire to my agency and all in the state and I've never heard or seen this. Snap caps are not necessary (for the Glock). You will never create the same tortures on the gun by dry fire that you will get with an actual firing of a round of ammunition. |
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Posted: 9/17/2017 2:04:30 PM EDT
[#35]
Quote HistoryQuoted:
I wouldn't call it an anomaly, as there have been quite a few reports of this. During actual firing the primer prevents the striker from slamming into the back of the breech face, just like a snap cap would. From the FAQ on Glock's site: "It is ok to dry fire your Glock pistol, but in situations where the pistol will be subjected to continuous sessions of dry firing, the use of a snap cap or dummy round is recommended." |
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Posted: 9/17/2017 2:17:54 PM EDT
[#36]
I realize your question is probably rhetorical, but Google "Glock breech face" and start counting. It's a known issue. Sorry, I don't have any exact figures. I'm an LE armorer as well and always recommend using snap caps in Glocks per their direction. Plenty of people claim to dry fire often with no issues, but snap caps are cheap insurance, especially if it's your duty or carry. YMMV
Quote HistoryQuoted:
How many is quite a few? |
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Posted: 9/17/2017 3:01:34 PM EDT
[#37]
Quote HistoryQuoted:
I realize your question is probably rhetorical, but Google "Glock breech face" and start counting. It's a known issue. Sorry, I don't have any exact figures. I'm an LE armorer as well and always recommend using snap caps in Glocks per their direction. Plenty of people claim to dry fire often with no issues, but snap caps are cheap insurance, especially if it's your duty or carry. YMMV I would be curious to find out if the other examples of this failure had modified their gun in anyway (I.E. milling the slide for an RMR). |
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Posted: 9/17/2017 3:08:54 PM EDT
[#38]
Hmm when was the last time you took the Glock armorer course?
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Posted: 9/17/2017 5:41:23 PM EDT
[#39]
Quote HistoryQuoted:
Hmm when was the last time you took the Glock armorer course? |
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Posted: 9/17/2017 6:44:37 PM EDT
[#40]
Quote HistoryQuoted:
2 years ago, you? |
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Posted: 9/17/2017 7:02:27 PM EDT
[#41]
Quote HistoryQuoted:
Recently. Just wondering. Less than 2 years ago. When they started to put that out during the course. Must be something new. I'm not saying it doesn't happen, but when I search glock failures, I see more out of battery detonation's than I do cracked breech faces. I just think this is being blown out of proportion. Is it good to know about, yes. Should everyone run out and buy and use snap caps, I don't think so. Bottom line, if you can break a glock during normal use, they will repair or replace it, as any good company should. If we looked at the percentage of true catastrophic failures (I say catastrophic because we often find guns with broken parts that still function) vs. how many guns are out there I think we would be more amazed that there are not more. |
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Posted: 9/17/2017 7:51:33 PM EDT
[#42]
Just curious.....when you use those snap caps for dry fire isn't it a PIA racking the slide to reset?
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Posted: 9/17/2017 7:53:52 PM EDT
[#43]
Quote HistoryQuoted:
Just curious.....when you use those snap caps for dry fire isn't it a PIA racking the slide to reset? |
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Posted: 9/17/2017 9:12:11 PM EDT
[#44]
Quote HistoryQuoted:
Just curious.....when you use those snap caps for dry fire isn't it a PIA racking the slide to reset? |
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Posted: 9/21/2017 10:34:37 PM EDT
[#45]
This has happened to my personal 23, but with live ammo. I scrubbed a while, put 400 factory rounds down the pipe, so a ring around the breach was not uncommon. Nylon brush didn't take it off, so a bronze brush, then a stainless one. Then I examined further, with a dental pick. Found what you have there, except I also had a hairline Crack to the side opposite the ejection port. Sent back and they replaced the slide and barrel. Three different serial numbers for that one.
They might not replace the slide for free, since you modified it. Crossing my fingers for you. I always use snap caps. Cheap insurance to prevent a broken firing pin. Ask me how I know. |
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Posted: 9/22/2017 6:52:33 AM EDT
[#46]
Quote HistoryQuoted:
This has happened to my personal 23, but with live ammo. I scrubbed a while, put 400 factory rounds down the pipe, so a ring around the breach was not uncommon. Nylon brush didn't take it off, so a bronze brush, then a stainless one. Then I examined further, with a dental pick. Found what you have there, except I also had a hairline Crack to the side opposite the ejection port. Sent back and they replaced the slide and barrel. Three different serial numbers for that one. They might not replace the slide for free, since you modified it. Crossing my fingers for you. I always use snap caps. Cheap insurance to prevent a broken firing pin. Ask me how I know. |
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Posted: 9/22/2017 7:54:28 AM EDT
[#47]
I submitted the online repair request around the time I posted this thread and haven't heard back. I will try and call them today.
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Posted: 9/22/2017 1:57:50 PM EDT
[#48]
Can someone explain how this happens to the breech face- I'm confused...is it the striker rebounding all willy-nilly at full force (because there was no primer strike taking out most of the velocity) that slaps against the channnel, and that force is directed out laterally across the breech?
I promise I'm not dumb. |
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Posted: 9/22/2017 7:05:47 PM EDT
[#49]
This is concerning.
I don't do a ton of dry fire (prefer live ) but the fact you must dry fire to disassemble and dry fire can cause the slide to crack gives me pause. Owned a half dozen Glocks by the way.
I'll still keep a couple around but may not spend a whole lot of time on them anymore for this and several other reasons. |
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Posted: 9/22/2017 7:09:10 PM EDT
[#50]
Quote HistoryQuoted:
I imagine you can pull it back a quarter inch just like you can with no snap caps. I am more than likely buying a new Glock on Tuesday and already ordered snap caps. I might get that dryfire mag thing too. I got to play with one once, seemed to work pretty well. |
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