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Old 11-20-2013, 17:06   #1
F106 Fan
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Magpul Mags

I just picked up a few 10 rd Magpul M3 magazines and neither of the first two I tried will lock the bolt back on my Sig M400 or Colt AR-15. From my readings, I had expected better.

I really need a source for high quality 10 round magazines.

Richard
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Old 11-20-2013, 17:24   #2
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Quote:
Originally Posted by F106 Fan View Post
I just picked up a few 10 rd Magpul M3 magazines and neither of the first two I tried will lock the bolt back on my Sig M400 or Colt AR-15. From my readings, I had expected better.

I really need a source for high quality 10 round magazines.

Richard
I have one of those, at first it did the same thing but started locking the bolt as I used it a bit.
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Old 11-20-2013, 17:44   #3
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Lancer AWM. I have 5 of the black 10rd and they work great including locking the bolt back. Going to pick more up here and there to go along with the 20rd an 30 rd Lancers I also use.

I get them from Primary Arms or DSG. PA is cheaper for the black 10rders when they have them.

http://dsgarms.com/ProductInfo/LAN2320-23.aspx
http://dsgarms.com/ProductInfo/LAN2320-22.aspx

https://www.primaryarms.com/Lancer-S...gls2320-23.htm
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Old 11-20-2013, 18:47   #4
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Quote:
Originally Posted by F106 Fan View Post
I just picked up a few 10 rd Magpul M3 magazines and neither of the first two I tried will lock the bolt back on my Sig M400 or Colt AR-15. From my readings, I had expected better.

I really need a source for high quality 10 round magazines.

Richard
I've never had any problems with mine, they worked straight out of the package. If I were you, I'd go over to arfcom and browse the Magpul Industry forum to see if anyone is having the same problem. If not, post a thread and magpul will eventually get back to you or maybe someone there can help you out.
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Old 11-20-2013, 21:30   #5
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I have the same problem. I bought one of their 10rounders for shooting off the bench and maybe hunting. It was my first pmag purchase. Doesn't lock back when empty. No problems with my metal mags though.

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Old 11-20-2013, 21:54   #6
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It must be related to their 10 round mags then, because I have 5 30 round mags, and all of them make the bolt lock to the rear on my 6920. Wonder what the cause would be, because I'd assume the 10 is the same as the 30, just 1/3 the length.
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Old 11-20-2013, 22:03   #7
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Old 11-21-2013, 03:36   #8
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One of my 30 round pmags does the same thing.
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Old 11-21-2013, 03:47   #9
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I keep hearing about these Lancer mags, but I have heard of one used in combat. I wonder why that is? During the scare I saw cases of lancers sitting on the floor of the LGS, I asked about them, and was told he couldn't give them away. Back on track, I have a few 10 round pmags, and have yet to expirience any malfunction.
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Old 11-21-2013, 12:51   #10
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Magpul and Pmag both have a brand and are very popular. You could have the best mag in the world which is X times better that the Pmag but you still have to get past the reputation the other brand has already built.

The Lancers are very good mags and I like the design. I recommend giving them a try if you have not.
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Old 11-21-2013, 13:34   #11
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Quote:
Originally Posted by dkf View Post
Magpul and Pmag both have a brand and are very popular. You could have the best mag in the world which is X times better that the Pmag but you still have to get past the reputation the other brand has already built.

The Lancers are very good mags and I like the design. I recommend giving them a try if you have not.
Way better than Pmags!
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Old 11-21-2013, 14:25   #12
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My 10 round pmag works just fine, picked one up a few weeks ago just to give it a try. It's been 100% reliable just like my other 20 and 30 round pmags.
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Old 11-22-2013, 05:15   #13
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Ever think of calling MagPul customer service.........?
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Old 11-22-2013, 06:59   #14
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Originally Posted by faawrenchbndr View Post
Ever think of calling MagPul customer service.........?
I won't get a chance to actually use the mags until Monday. So far all I have done is grab up an AR and try to lock the bolt. Not a single round through the mag.

Richard
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Old 11-22-2013, 07:02   #15
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They should still lock back the bolt when hand cycling.
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Old 11-22-2013, 10:33   #16
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Quote:
Originally Posted by F106 Fan View Post
I just picked up a few 10 rd Magpul M3 magazines and neither of the first two I tried will lock the bolt back on my Sig M400 or Colt AR-15. From my readings, I had expected better.

I really need a source for high quality 10 round magazines.

Richard
Are you shooting Wolf or other Russian ammo?
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Old 11-22-2013, 12:33   #17
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P-Mags, Lancers, Colt aluminum, Okay Industries, NHMTG are all magazines you can count on. Try something other than the Pmags if they are not working properly.

I have a few 10rd. Pmags and they all work fine in my M400 and Colts. Not sure what the issue is with yours, do other brand mags work properly?
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Old 11-22-2013, 20:09   #18
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I have two 10-shot Pmags, have used both in two different ARs, no problems of any kind.
Never had any lock-back probs with ANY Pmag, as far as I can remember.

Let us know what you find out (or figure out).
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Old 11-22-2013, 21:03   #19
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Was playing around with mine again tonight and it started locking back when I manually retracted the bolt. It didn't at first tonight but then started and continued to stay open when retracting the bolt. Maybe something needed to wear in a touch, who knows. If it's gonna work now I'm happy.
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Old 11-23-2013, 05:32   #20
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Could be a burr or a bit of debris jamming the follower.
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Old 11-23-2013, 21:40   #21
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Originally Posted by faawrenchbndr View Post
Could be a burr or a bit of debris jamming the follower.
Probably, but when examining/using Magpul mags, one thing that has always impressed me is the lack of sharp edges at mold joints, or mold-squeeze-out/flashing along the joints. I don't know if it is because they have really high-quality molds and great maintenance, or dedicated finishing personnel who clean it all off before packaging (or both), but I, for one, appreciate it.

The difference between a good product (or company) and a great one, is often in the details.
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Last edited by DJ Niner; 11-23-2013 at 21:40..
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Old 11-24-2013, 06:11   #22
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Darn good point DJ.........
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Old 11-24-2013, 06:29   #23
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All of my 30rd Pmags work fine but all 3 of my 20rd Pmags have done that several times. I took them apart and couldn't find anything wrong with them. When I remove the upper and put an empty one into the lower, it looks like the bolt catch barely contacts the follower. Bit it does lift it and I can't manipulate with my fingers and make it miss. So I'm not sure if that's the problem. They're the only mags I've ever had an issue with.
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Old 11-24-2013, 06:32   #24
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Wow........would really like to know what the issue is.
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Old 11-24-2013, 07:22   #25
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I've got a 10rd C Products magazine that I've never had a problem with. As well as a flawless Colt 9rd mag.
http://www.midwayusa.com/product/988459/

Last edited by yz9890; 11-24-2013 at 07:24..
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