[ARCHIVED THREAD] - Glock Jams again (Page 1 of 2)
Posted: 3/26/2011 11:40:30 AM EDT
I recenlty posted about my glock jaming, and I boke it down, cleaned every part, inspected the extractor; but it is still jaming every 5 shots. Ive even been using different ammo. But i got a close up pic of the jam:
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Can we have details on the gun/ammo? All I can see is that it's a Glock .40 What model? Changes you have made/parts? Recoil spring? What ammo are you shooting? Light attached? Round count? Glock 23 No changes, stock Federal 180grn no light about 1500+ rounds through it |
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Do you have a heavier than stock recoil spring in that gun? Looks like the slide is not going back far enough. Double check that ejector. its completely stock. ive heard its the extractor and/or the recoil spring. I would just like to figure out what it is before i buy a replacement part. |
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Does anyone else think the extractor looks nasty? I've never seen one that chewed up with drag marks. I'm going to strip my G30 with about 7k through it, and see if it looks that bad. Looks VERY rough to me. I replaced my extractor when I converted my G23 to 9mm, and it was chewed up some, but on the leading edge, not the back like that. Makes me think there may be something rubbing that is keeping the extractor from getting a firm hold on the cartridge. |
| Looks like a failure to extract… No offense but that is one nasty extractor. I have seen many Glock extractors with 5k plus rounds on them and none looked as bad as yours. Take your pinky finger and see if you can feel a sharp edge under your fingernail at the end of your extractor. My guess from your pictures and symptoms is your extractor is worn flat (or near flat). I recently replaced an extractor on a 23 with around 2k rounds through it and have seen many others with many more rounds on them function just fine… No telling why. |
| That is definitely a nasty looking extractor. Has the gun been dropped or banged hard enough to compress the slot the extractor sits in?(Doesn't look like it from the pic). Also I've heard of installing the plunger assembly backwards causing similar malfunctions. That would be a brain fart I could see myself having. |
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It's the extractor like everyone else is saying. But I think there's more going on. That's galling of the metal. Galling can be caused by a number of things: friction between hardened steel and soft steel, lack of lubrication, or just some alloys are prone to galling. Point is, there's something else going on. At the least, there's probably burs in the extractor slot that need to be taken down with fine emory.
I have seen a couple of chewed up extractors. They weren't on Glocks, they were both .22s; one a pistol, the other a rifle. In both cases, it looked like they'd never been cleaned. Carbon had built up so hard that the extractors were almost immobile. Continued firing had forced them to move and they got chewed up. And when I say the carbon was hard, I mean it was so hardened that little pieces that looked like broken glass fell out when I pulled the action apart. Once I realized what it was, I chipped out plenty more. |
| something must be fundamentally wrong- you should not need to replace any parts after 1500 rounds- if that were the case I'd be rebuilding my glocks every couple months- if you do some parts replacement every 10k MAYBE that is reasonable. But my glocks are into the 50k+ range without any part swaps.-I will admit once a year I go to GSSF shoots and get the free armorer inspection but have never done any parts replacment |
| The wear on the front of the extractor is unusual. You don't by any chance stick a round in the chamber and close the slide on it do you? If not, I would make sure the rounds aren't jumping out of the magazine before they are supposed to and the extractor is slamming into the casing and then having to jump around the rim. |
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The wear on the front of the extractor is unusual. You don't by any chance stick a round in the chamber and close the slide on it do you? If not, I would make sure the rounds aren't jumping out of the magazine before they are supposed to and the extractor is slamming into the casing and then having to jump around the rim. nope, never done that |
| I have had glock 22's with over 10000rds through them with one extractor and never seen one look that bad. Take your slide all the way down, clean all the parts clean out the extractor area in the slide, I would put a new firing pin safety, firing pin safety spring, and extractor in it. None of those parts are much money. Man that extractor looks bad. |
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Quoted: Does anyone else think the extractor looks nasty? I've never seen one that chewed up with drag marks. I'm going to strip my G30 with about 7k through it, and see if it looks that bad. A few years ago, I had a police trade in that was chewed up like that. It was having FTE all the time. I think this is the problem... LW barrels should not cause the problem. If the problem came up while using the LW, I would contact Glock and LW with the problem.... They both have great C. S..... |
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The wear on the front of the extractor is unusual. You don't by any chance stick a round in the chamber and close the slide on it do you? If not, I would make sure the rounds aren't jumping out of the magazine before they are supposed to and the extractor is slamming into the casing and then having to jump around the rim. I always stick a round in the chamber and close the slide on it. Should this not be done? |
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The wear on the front of the extractor is unusual. You don't by any chance stick a round in the chamber and close the slide on it do you? If not, I would make sure the rounds aren't jumping out of the magazine before they are supposed to and the extractor is slamming into the casing and then having to jump around the rim. I always stick a round in the chamber and close the slide on it. Should this not be done? No. It should not. |
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Quoted: So what, insert mag, rack slide, remove mag, add another round to mag to make it full? Yes. That's the correct process. It's hard on the extractor to drop a round in the chamber and let the slide go forward. I'm interested to see what's causing the extractor to get chewed up like that! ETA: Could we possibly get a picture of the slide where the extractor is inserted? Remember when you put the extractor back in, metal goes to metal and plastic goes to plastic (metal part of extractor plunger goes against the extractor, plastic end goes against the slide cover) |
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Yes, it is different. When you insert a loaded magazine and the slide goes forward, the slide strips off a loaded cartridge from the magazine. As this is occurring, the rim of the cartridge slides behind / is fed up behind the extractor. When you put a cartridge in the chamber and the slide goes forward, the extractor hits the rear of the cartridge, and has to snap over the rim. This could, over time chip or in some extractor designs bend the extractor. |
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Yes, it is different. When you insert a loaded magazine and the slide goes forward, the slide strips off a loaded cartridge from the magazine. As this is occurring, the rim of the cartridge slides behind / is fed up behind the extractor. When you put a cartridge in the chamber and the slide goes forward, the extractor hits the rear of the cartridge, and has to snap over the rim. This could, over time chip or in some extractor designs bend the extractor. I destroyed the extractor in my first pistol, a 1911, before I learned this lesson. I blamed the gun, when it was totally my fault. |
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LW barrels should not cause the problem. If the problem came up while using the LW, I would contact Glock and LW with the problem.... They both have great C. S..... I think it certainly could beat up the extractor. It has a different feed ramp geometry and possibly a tighter chamber. I would point to that as the cause. |
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So what, insert mag, rack slide, remove mag, add another round to mag to make it full? Yes. That's the correct process. It's hard on the extractor to drop a round in the chamber and let the slide go forward. I'm interested to see what's causing the extractor to get chewed up like that! ETA: Could we possibly get a picture of the slide where the extractor is inserted? Remember when you put the extractor back in, metal goes to metal and plastic goes to plastic (metal part of extractor plunger goes against the extractor, plastic end goes against the slide cover) i wasnt able to get a clear pic of the slot where the extractor goes in, but i always remember how its plastic to plastic and metal to metal. But while I was taking pics, I noticed this slight indentation above the extractor that I think is caused from the conversion barrel, cause I noticed some wear on the edge of the barrel hood: 
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Quoted: I've seen many well used Glock pistols, and I can't say I've ever seen that kind of damage to a slide. I've seen dings on the bottom of the slides, but never it that location. Between the extractor and the slide, I'd say that pistol needs to go back to Smyrna. I would agree!! It lookks like the LW barrel is not in spec!!! I would send it to Glock and call LW!!!! |
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Quoted: I've seen many well used Glock pistols, and I can't say I've ever seen that kind of damage to a slide. I've seen dings on the bottom of the slides, but never it that location. Between the extractor and the slide, I'd say that pistol needs to go back to Smyrna. +1 to all of this. |
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So what, insert mag, rack slide, remove mag, add another round to mag to make it full? Yes. That's the correct process. It's hard on the extractor to drop a round in the chamber and let the slide go forward. I'm interested to see what's causing the extractor to get chewed up like that! ETA: Could we possibly get a picture of the slide where the extractor is inserted? Remember when you put the extractor back in, metal goes to metal and plastic goes to plastic (metal part of extractor plunger goes against the extractor, plastic end goes against the slide cover) i wasnt able to get a clear pic of the slot where the extractor goes in, but i always remember how its plastic to plastic and metal to metal. But while I was taking pics, I noticed this slight indentation above the extractor that I think is caused from the conversion barrel, cause I noticed some wear on the edge of the barrel hood: http://i197.photobucket.com/albums/aa7/rmbstyle/P1000953.jpg http://i197.photobucket.com/albums/aa7/rmbstyle/P1000952.jpg Yeah that ain't good |
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The wear on the front of the extractor is unusual. You don't by any chance stick a round in the chamber and close the slide on it do you? If not, I would make sure the rounds aren't jumping out of the magazine before they are supposed to and the extractor is slamming into the casing and then having to jump around the rim. I always stick a round in the chamber and close the slide on it. Should this not be done? The round is NEVER in front of the extractor. When your insert a loaded mag, release the slide, the round is pushed forward by the cocking lug, the round slips up BEHIND the extractor, then it's fed into the chamber. When you stick a round in the chamber and let the slide go, the extractor slams into the rim of the cartridge and it's forced to jump around the rim. This will cause damaged to the cartridge and your extractor and will make it eventually fail. Take some dummy rounds or next time you are at the range, insert a loaded mag and slowly release the slide and you will see what I'm talking about. As another poster stated, you always insert mag, chamber a round, extract mag and top it off. Always feed EVERY magazine fed pistol from the magazine. |