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chrisf
02-29-2012, 12:46 AM
Does anyone notice any problems with there ar-15's with p-mags? Ive never had a problem with my ar-15 until I started using these. The main problem is when I fire off a round the next round seems to get missed by the bolt. Ive never had that problem until I started using these specific mags? Other then that they are awesome, And easy to load.

Ruiner
02-29-2012, 12:48 AM
Are you using 10/20 pmags? If you are, this is a known issue with them and the main reason I use the 10/30s instead.

chrisf
02-29-2012, 12:50 AM
Yes they are 10/20 I guess ill start using 10/30's

Ruiner
02-29-2012, 12:54 AM
Yeah both my 10/20s did the exact same thing you describe. Some people don't have problems with theirs but this is a well documented issue. The 10/30s do not have this problem as the follower design is different (anti tilt). I believe magpul said they are redesigning the 20 rd pmags at some point.

chrisf
02-29-2012, 12:57 AM
Yeah both my 10/20s did the exact same thing you describe. Some people don't have problems with theirs but this is a well documented issue. The 10/30s do not have this problem as the follower design is different (anti tilt). I believe magpul said they are redesigning the 20 rd pmags at some point.
Alrighty thanks for the info. I think I may go steel anyways. But my polymer lower doesn't really look right with them :-/

htfan
02-29-2012, 9:19 AM
Alrighty thanks for the info. I think I may go steel anyways. But my polymer lower doesn't really look right with them :-/

Could this be part of the pmag compatibility problem?

I use both store bought and "end-user blocked" 10/20 pmags that work flawlessly. (Spikes lower)

nitroxdiver
02-29-2012, 9:33 AM
I've seen a couple sig 556's bobble with 10/20 pmags, yet run flawlessly with c products stainless 10/20's. I've had zero issues with them in my AR's however.

Sturnovik
02-29-2012, 9:48 AM
Does anyone notice any problems with there ar-15's with p-mags? Ive never had a problem with my ar-15 until I started using these. The main problem is when I fire off a round the next round seems to get missed by the bolt. Ive never had that problem until I started using these specific mags? Other then that they are awesome, And easy to load.

I took my AR out for the first time this weekend and 5 jams out of a 105 rounds were what you descibed. It bumps and skips over the round even when I manually charge the gun into battery with the charging handle and not bolt catch. It sounds like its the 10/20's doing this?


Are you using 10/20 pmags? If you are, this is a known issue with them and the main reason I use the 10/30s instead.
I had no idea they were the major cause of this, 10/30's haven had these issues for the most part? I took my AR out this weekend and didnt know what to expect, I figured I didnt seat rounds properly but it sounds like this was the issue too.

TNP'R
02-29-2012, 10:08 AM
Nope My pmags work perfectly.

htfan
02-29-2012, 10:23 AM
... I had no idea they were the major cause of this, ...



I wouldn't jump to this 10/20 pmag "major cause" conclusion. There are many of us using 10/20 pmags with 100's of rounds through them with no issues.

gun toting monkeyboy
02-29-2012, 10:29 AM
It could be the mag, it could be the spring in the mag. I made a couple of 10/20 pmags using 20 round kits, the pmag 10 round limiter, and some epoxy, and they have been running great. I have heard of some people having problems, but not as many as the reports online would lead you to believe. Try swapping mags and see if that fixes the problem. If these were Magpul-made 10/20s, I would contact Magpul about it.

-Mb

Mail Clerk
02-29-2012, 10:31 AM
Does anyone notice any problems with there ar-15's with p-mags? Ive never had a problem with my ar-15 until I started using these. The main problem is when I fire off a round the next round seems to get missed by the bolt. Ive never had that problem until I started using these specific mags? Other then that they are awesome, And easy to load.

chrisf,

Yeah it's a timing issue between the bolt and the magazine spring. P-Mags springs need to be made stronger.

Mail Clerk

htfan
02-29-2012, 10:37 AM
... it's a timing issue between the bolt and the magazine spring. P-Mags springs need to be made stronger.



makes some sense, however it sounds more like a possible quality control issue (spring?) ... and not a major problem with all 10/20 pmags!

Sturnovik
02-29-2012, 10:38 AM
I wouldn't jump to this 10/20 pmag "major cause" conclusion. There are many of us using 10/20 pmags with 100's of rounds through them with no issues.

Yea I re-read it and didnt mean for it come off that way, in any case, I meant relating to his issue and that I heard some people saying stuff about the 10/20's having issues, I assumed it was related to this, but it makes me wonder since I know I seated most of the rounds properly.

Ruiner
02-29-2012, 12:21 PM
The issue can be alleviated with a stronger spring. They may have done this at some point during production. My pmag 10/20s were bought when they first came out. At the time, using a spring from a 30 rd mag was a common fix. Too bad we cant disassemble the 10/20 to fix it tho..

2euro
02-29-2012, 12:30 PM
My 10/20 pmags work perfect! Who converted yours? I hear depending on the method of conversion, you can have some issues.

I get my pmags 10/20 and 10/30 from RifleGear and never had an issue.

Ruiner
02-29-2012, 12:36 PM
Mine were from riflegear. 10/30s work flawlessly as well as my old bushmaster 10/20s.

Dead*Reckoned
02-29-2012, 12:39 PM
I have a 5/20 pmag, and I was getting an issue with the bolt skipping the first round as well.

Sturnovik
03-01-2012, 10:45 AM
I have a 5/20 pmag, and I was getting an issue with the bolt skipping the first round as well.

yea I narrowed it down to one mag. I have 3 pmags and 1 is faulty or just needs a better spring, but since its from riflegear I'm out of luck, I can just buy another pmag for like 15 bucks from my local store.

The riflegear one is a year and half old and it worked fine with my keltec but not on the AR. I couldn't get one round to seat it in, the bolt just skips right over all the rounds. The Pmags I got my store have the 10/20 magpul block in it so I can actually see it and maintain the mag. I had no idea magpul starting making the block for us stuck with restrictions.

More than likely it was just the spring riflegear was using at the time.

cbaer5
03-01-2012, 10:51 AM
really? All I use are the 10 20s and never had a problem. I have even traided my 10 30s for 10 20s.

Sturnovik
03-01-2012, 11:00 AM
really? All I use are the 10 20s and never had a problem. I have even traided my 10 30s for 10 20s.

I like the size and efficiency of the 10/20's, for what they are.

That said, the riflegear one I have is a year and a half old, they must have changed springs or something since people really like theres. Every other mag that are pmags I have tried work, but they all have the block that says 10/20 on it, so they arent from riflegear. Its strange.

Not sure...

ocabj
03-01-2012, 11:03 AM
I wanted to try PMags since they are Service Rifle legal under CMP rules. I'm still using USGI 20 straight bodies.

http://www.ocabj.net/gallery2/d/5414-5/magazines.jpg

Sturnovik
03-01-2012, 11:10 AM
I wanted to try PMags since they are Service Rifle legal under CMP rules. I'm still using USGI 20 straight bodies.

http://www.ocabj.net/gallery2/d/5414-5/magazines.jpg

I've been wanting to find some metal straight body 10/20's for a while, as long as they had an anti tilt follower.

mr.BeBoT
03-01-2012, 11:31 AM
FWIW I got all my 10/20s from calegalmags, first day with them saw about 500+ rounds and no issues yet.

Arnelcheeze
03-01-2012, 11:41 AM
I also had issues with 10/20's, the angle of the feed was too flat compared to my 10/30's
i even exchanged them and had the same issue, I then filed away some material on the feed lips so that the feed angle would match the feed angle on my 10/30's. I fixed 1 out of 2 on this procedure. the other one i filed away too much material and the magazine was turned into a paper weight. I heard somewhere that its the 1st generation 10/20 magazines, but thats just what i heard...

Sturnovik
03-01-2012, 12:46 PM
FWIW I got all my 10/20s from calegalmags, first day with them saw about 500+ rounds and no issues yet.

Thats good, yea I know magpul may have some advantages but I do want some steel ones. Were they those D&H branded mags?

I also had issues with 10/20's, the angle of the feed was too flat compared to my 10/30's
i even exchanged them and had the same issue, I then filed away some material on the feed lips so that the feed angle would match the feed angle on my 10/30's. I fixed 1 out of 2 on this procedure. the other one i filed away too much material and the magazine was turned into a paper weight. I heard somewhere that its the 1st generation 10/20 magazines, but thats just what i heard...

Oh wow what a bummer. Yea this must be an older one. The 10/20's I have that appear to be made by magpul or just have there brand block in it are 100%, not the older one from riflegear.


Anyways sorry to steal the thread OP, have you found the issue with the mag yet?

CALI SHOT DOC
03-01-2012, 1:47 PM
i was thinking of picking up a 10/20 when i get my ar on monday but now i'm not sure after reading this thread with the issues people are having

Sturnovik
03-01-2012, 1:54 PM
i was thinking of picking up a 10/20 when i get my ar on monday but now i'm not sure after reading this thread with the issues people are having

Not everyones had issues, I see alot of 10/20 pmags on the ranges and generally great reviews of them. That said a few people including one of mine, have had issues with them. If I had a camera to take footage I'd upload it and show you all. Doesnt matter how many times I rack the charging handle or use the bolt catch, the rounds just slip under. That said it must be a spring or something, I'm no mag expert though. Mine was from riflegear.

chrisf
03-01-2012, 4:18 PM
I don't see it fair to completely put it on p-mags BUT! I must say others have the same problem AND I've tried various mags and never had this problem. So it has to be either the mag itself has a flaw or pmags 10/20's need some work. Don't be so quick to jump on polymer lowers.

milotrain
03-01-2012, 4:46 PM
I've had exactly the same problem with 10/20 p-mags.

Sturnovik
03-01-2012, 4:48 PM
I don't see it fair to completely put it on p-mags BUT! I must say others have the same problem AND I've tried various mags and never had this problem. So it has to be either the mag itself has a flaw or pmags 10/20's need some work. Don't be so quick to jump on polymer lowers.

Yea I looked around, a few others have had the issue too. I wonder if the 10/30's really work better.

I've had exactly the same problem with 10/20 p-mags.

Did switching to 10/30's or other brand/types of 10/20's 10/30's fix it?

icenix
03-01-2012, 5:10 PM
My pmag 10/20's work perfectly. Never an issue.

motorwerks
03-01-2012, 8:34 PM
Ive never had any problems with my P-mags, whether it was my 10/20, 10/30, 30's for our of state, or my 10/20's, or my out of state 20's for my .308 all of them have been 100% including the shorty cut down .308 10 rounder.

milotrain
03-01-2012, 9:22 PM
Replacing the follower with a magpul fixed the feed problem but not the occasional bolt closed on an empty mag.

dbo31
03-02-2012, 7:01 AM
Had issues with the 10/30. I would load the rounds in and see they weren't sitting right in the mag..then i had to slap them in HARD to get them to stay. Just cycling the rounds through the rifle without firing they weren't feeding right and i was getting ftf. This was with 2 different 10/30 P-mags..its possible I just got 2 bad mags but who knows. I've never once had issues with my cheap Tapco mags..slide in easy..never a ftf. But i'll probably try some P-Mags purchased from a different dealer.