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  1. #1
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    Glock 30 - 9 Round factory magazine issues.


    Hey all,
    Just a quick comment, and search for anyone who has had similar issues with this magazine in their Glock 30? I bought it a couple of weeks ago from CTD to use for concealed carry so the small extension on the 10rd mags that come with the gun, don't cause any printing. When I first got it, like I have heard many of you, had trouble getting the 9th round in, but when I finally did (using a speedloader) I took the suggestion of several people and left it in my gun bag for about two weeks before shooting it through the gun. Just took it out to the range, and the first time it shot fine, no failures. however the second time, I loaded it how I would intend to carry; with one in the chamber and a full magazine of 9rds. First shot I got a FTE (failure to eject the casing from the chamber) and it looked as if the next round (still in the magazie) was up too high into the slide assembly in order for the casing to pass over it. Nonetheless I had to drop the mag and rack then slide, then re-load and finally fire. This malfunction happened to me twice, and then worked fine the remaining 4 cycles that I fired it.

    I went home thinking that the spring may have just needed to break in further, and reloaded the magazine to let it sit for another week. Then when I went to the range yesterday it started acting up on me again. Same FTE malfunction. So I thought, ok well maybe you're not supposed to carry 9+1 with this magazine (because after chambering a round, it took quite a bit of force to fully insert the magazine into the gun). So I just loaded 9 up and threw it into the gun with the slide back, hit the slide release and the slide jams! *(note, all this time I had the two 10rd mags with me and they were functioning in the gun flawlessly as from day one)* so I lock the slide back, remove the magazine to inspect it and compare the upper portion to the other magazines.

    I noticed that where the upper part of the metal curves in to hold the round after it is inserted into the magazine, there is a gap between the back piece and the curved pieces; where there is not on the 10rd mags. This little gap leaves a lip on which the first round always catches on when there is 9 rounds (full) in the magazine, and therefore I have to force (with a little tap) the slide forward to get the gun into battery. I'm going to try to upload pics of this so it is easier to understand, but could it be that leaving the magazine full for 3 weeks actually "stretched" the sides out?? I've never had problems before with this gun and factory magazines, even aftermarket magazines work fine.

    Please let me know if anyone has had similar issues and what to do? for now just carrying 8+1 until I figure out whats going on with the 9+1 issues..

    you can see in the pictures the small gap I am talking about towards the rear (top) of the magazine. and it almost seems as if the last (top) round in the 9rd mag sits a little higher up than the last round in the 10rd mag. the lip on the casing gets caught on the gap on the 9 rd mag.
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  2. #2
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    I see another possible concern, note the gap in the metal sleeve joint on the mag on the left, as opposed to the no gap sleeve on the right. (I also circled your concerns so others can see the difference easily)










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  3. #3
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    Quote Originally Posted by Otintx View Post
    I see another possible concern, note the gap in the metal sleeve joint on the mag on the left, as opposed to the no gap sleeve on the right. (I also circled your concerns so others can see the difference easily)
    Thank you sir! I was going to try to do that last night so it was more clear, but I was too tired. and I didn't notice the seem gap, or lack thereof on the 9rd mag... interesting. So has anyone else had these problems, or do I possibly have a defective magazine?
    THIS IS MY GLOCK. THERE ARE MANY LIKE IT, BUT THIS ONE IS MINE.

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    You are most welcome Sir !


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  5. #5
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    I just compared my ten rd mags vs. my 9 rd mags and they look identical at the upper mag lips and follower. One thing I believe is that storing mags at full capacity isn't a very good idea. Full capacity over compresses the spring and puts a lot of pressure on the mag lips at the top of the mag. It can cause them to spread which will cause a lot of FTF problems as well as weaken the spring drastically. I tend to store mags about 1-2 rds short. I'm not 100% sure if this applies to all mags but I know it happens to Ar15 mags, GI and aftermarket ones, so I apply that thought to all of my mags. Magpul Pmags actually come with a mag cap that not only keeps dust out but keep the top round pushed down off of the lips to alleviate the pressure from the mag itself.

    I have a Glock 19 as well which was once as a carry gun. I had to rebuild two mags because of a ton of FTF issues I believe due part to weak springs from being compressed fully loaded continuely. New springs and they work like new!

    One question I have is, has anyone had any of their mags sound like something has come loose in it when fully loaded to capacity? I have one glock 30 mag and one glock 19 mag that do that. I've taken them apart and everything seems normal. Anyone else experience this with a glock mag?

  6. #6
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    Quote Originally Posted by Wickedrex View Post
    I just compared my ten rd mags vs. my 9 rd mags and they look identical at the upper mag lips and follower. One thing I believe is that storing mags at full capacity isn't a very good idea. Full capacity over compresses the spring and puts a lot of pressure on the mag lips at the top of the mag. It can cause them to spread which will cause a lot of FTF problems as well as weaken the spring drastically. I tend to store mags about 1-2 rds short.
    Yes, I normally do store them with only about 5 rounds in each, but because others have suggested to leave 9 rounds in the new mag for it to "break-in" the spring made sense to me. Interesting though that your 9 round upper is the same as your 10 round.. i wonder if CTD is selling fakes!! would you mind posting a pic of your 9 round mag? thanks! and to answer your magazine noise question, no I have not heard anything that sounds like it came loose when i fully load the magazine.
    THIS IS MY GLOCK. THERE ARE MANY LIKE IT, BUT THIS ONE IS MINE.

  7. #7
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    Unfortunately, my laptop has taken a crap. I can't figure out how to post pictures with my IPhone or the wife's iPad. And I can even begin to figure out how to use her iMac I bought her for Christmas! Better figure it out at some point! . Anyhow I believe I can still be useful and convey the look of my mags from your pictures. Using the picture with the unloaded mags, all of my mags (Glock 30 factory nine and ten rounders) look just like the mag on the left. There is a cut out on the metal sleeve that kind of follows the plastic housing.

    Now on my glock 19, all but two of my mags have a metal sleeve that looks like the mag on the right. I'm not sure if this makes a very big difference since all of my mags work without any hiccups at this point in both of my glocks. The only FTF I've experienced was with two of the 19 mags but like mentioned before, found those issue to be due to weak follower springs. Once I replaced those, problem was solved. No issues to date with my Glock 30.

  8. #8
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    Magazine Problem!

    You know, your question is more complex than you might think and covers a variety of different issues. So, where to start?

    Quote Originally Posted by Ermey.45 View Post
    Just a quick comment, and search for anyone who has had similar issues with this magazine in their Glock 30? I bought it a couple of weeks ago from CTD to use for concealed carry so the small extension on the 10 rd mags that come with the gun, don't cause any printing.
    Of course body size and weight are factors; but, if you’re using the right gunbelt and an appropriate holster the end of your magazine really shouldn’t be patterning. Magazine butts usually pattern when the combination of belt and holster fail to pull the pistol in tight against your side. For instance I often use ITB/IWB holsters that NEVER pattern on me! In fact it’s been years since I’ve been, ‘made’ by anyone who wasn’t trying to run their hands over me.

    My usual EDC piece? It's a Glock Model 21. My usual holsters? A very expensive Wm. Tucker, ‘Henry Fisher' (HF-1) OTB holster that is designed in such a way that the gun’s butt is pulled in tight against your side. I, also, frequently use standard Blade-Tech holsters that are fitted with their ingenious, ‘Tek-Lok’ clasps.

    What I do is to wear my Blade-Tech holsters on the opposite side from where they’re designed to be carried AND inside my belt; e.g.: A standard OTB/RH holster is changed over to the LH side and worn ITB. Does this work? I guess! I’ve been doing this, almost everyday, for more than 9 years, now. Thinking about it, I’d say it’s been more than 5 years since anyone, including several police officers, have, ‘made’ me.

    The secret to successful concealed carry? Use the right (reinforced) gun belt; and a, ‘tight to your side’ holster. My gunbelts? One is a 1 1/2” Wm. Tucker; (One of the best pieces of leather I’ve ever owned.) and the other is a polymer reinforced 1 1/2” dress leather belt from, ‘The Belt Man’. (It’s a very strong, absolutely no sag, gun belt!)

    Quote Originally Posted by Ermey.45 View Post
    When I first got it, like I have heard many of you, had trouble getting the 9th round in, but when I finally did (using a speedloader) I took the suggestion of several people and left it in my gun bag for about two weeks before shooting it through the gun.
    Two weeks! Wow, that’s really, ‘overkill’. Two or three days would have been more than enough. However, getting that last round in has been an issue with quite a few different Glock magazines. Personally, I don’t attempt to do this until after I’ve used the magazine for awhile.

    Quote Originally Posted by Ermey.45 View Post
    Just took it out to the range, and the first time it shot fine, no failures. however the second time, I loaded it how I would intend to carry; with one in the chamber and a full magazine of 9rds .......
    You’re talking about loading your pistol to full magazine capacity plus one - Aren’t you. OK, this topic comes up frequently on internet gun forums; and, it is always a contentious subject. Let me tell you what this pistolero does AND why:

    I was, originally, trained to use firearms by 4 of my uncles. All of them were United States Marine Corps combat veterans of either the South Pacific during WWII, or else in Korea. (God rest their souls; they’ve all passed on now.) In the 1940’s and 50’s Marine Corps 1911 pattern pistol magazines were never loaded to full capacity. Why? Because the Corps found that too many, ‘malfs’ occurred when their pistols were loaded this way.

    My uncles trained me in exactly the same way that they had been trained. As a result I have had the lifelong habit of loading my magazines down by one round in order to absolutely, positively, avoid the very problem you describe. Every once in awhile, and while I’m at the range, I’ll screw around and load up one of my Glocks to +1 capacity. Know what? Often it works; and, occasionally, it doesn’t. It’s the, ‘occasionally part’ that I worry about!

    Needless to say I, personally, NEVER carry a self-defense pistol that’s been loaded to +1 capacity. As far as what the next guy on the internet likes to do? I don’t care. The choice is entirely his own; I’m only telling you how I’ve been trained, why, and what I do. As far as your various malfunctions go with that new magazine? Doesn’t seem the least bit unusual to me.

    Quote Originally Posted by Ermey.45 View Post
    ……. So I lock the slide back, remove the magazine to inspect it and compare the upper portion to the other magazines. I noticed that where the upper part of the metal curves in to hold the round after it is inserted into the magazine, there is a gap between the back piece and the curved pieces; where there is not on the 10rd mags.
    Coincidentally, I have several Glock Model 21 magazines sitting, right here, on my desk as I type. That, ‘little gap’ in the body liner is perfectly normal. My magazines, all, get used a lot; so, I very much doubt that gap is causing you a problem. What might very well be the culprit is those cutouts at the top of both sides of the magazine's metal body liner.

    If that new magazine is a 9 rounder; and the ninth (top) round is catching, then, it’s obviously being caused by a very strong upward spring pressure that’s pressing the top round up and against the cutouts at the back of those lips. I think the cartridge rim is getting stuck behind those angled cutouts; and until the angles are relieved at, say, a 45 degree angle the problem is going to continue.

    Of course a weaker magazine spring might, very well, solve your problem; but knowing Glock, GmbH as well as I do, I’ll just bet that the factory is using a standard 10 round magazine spring inside that magazine. (No, you do NOT want to fool around with that magazine spring by cutting coils or overcompressing it any more than you have already done. Anything that’s, ‘field expedient’ might only lead to other problems with that magazine.)

    Quote Originally Posted by Ermey.45 View Post
    …… But could it be that leaving the magazine full for 3 weeks actually "stretched" the sides out?? I've never had problems before with this gun and factory magazines, even aftermarket magazines work fine.
    No! You haven’t, ‘stretched the sides out’. Do you see that right angle bend on each of the top lips? Do you own a Dremel Tool with a small grinding (or polishing) head? I’m not going to tell you what to do; but, if it were my problem magazine I know what I would do.

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    Some pictures for ya -

    http://img81.imageshack.us/img81/499/bladetech2.jpg

    http://img545.imageshack.us/img545/8439/mydailyrig.jpg
    Last edited by Arc Angel; 02-09-2012 at 07:58 PM.

  9. #9
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    Now, here is a real magazine problem from a Glock G30SF. Still haven't figured this out and obviously the armorer hasn't either or he would have called me by now since it's been a week.


  10. #10
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    Yes those are the cutouts (circled in the second post) that are causing my problem. My issue with the magazine is that they seem to make two different versions of this magazine. (one like without the cutouts and one with a slightly different liner design st the top portion that does not have the cutouts) which would solve the issue of the slide jamming up when I got to load it. Printing i guess isnt really my main issue, just less sticking out to worry about when I have just a t-shirt on (I'm not overweight, just a big guy @ 6'4" 250lbs, I'm a little wide in the hips too which doesn't help. Thanks for the suggestion on the holsters; I currently use a blackhawk IWB (sleeve) until I get my Theis holster in the mail (should be much better). Ad far ass the +1 issue, I appreciate your input and sharing of knowledge that your elders passed onto you (Thankful for their service as well) but I don't see why it should be a problem with these guns. As of now, the slide jam issue (the lip of the casing catching on the magazine cutouts) has dramatically decreased, and I notice the 9th round is much easier to get in now (probably finally breaking in after about 300 rounds) and a side note, when i took the magazines apart, the 9rd does have the same size spring as the 10rd...interesting...anyway, I appreciate your response, and am currently carrying 8 in the mag, 1 in the chamber, no issues so far...carry on!
    THIS IS MY GLOCK. THERE ARE MANY LIKE IT, BUT THIS ONE IS MINE.

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