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colmustard 11-13-2012 01:10 AM

So I am a fan of the regular G.I. aluminum mags, they have served me well, both home and abroad. But I do own some Pmags and I like them also. But latly I have heard that if your store Pmags for long periods of time without the dust cover on them, the lips will begin to spread. So has anyone seen this happen? I have always stored mine with the dust cover, but what if you list the dust cover? Could you store them loaded anymore without risk of damage to the polymer mag?

Anyone with any experiance please chime in. Also if you where to choose one mag to go anywhere for an indefenite ammount of time what mag would you choose and why?

7point62 11-15-2012 11:25 AM

I use Magpul Pmags with the impact dustcovers. Never had any problem at all storing loaded Pmags. I don't store any loaded mags for extended periods without some kind of covering, even if's it's just an old t-shirt thrown over them. Unloaded mags I put in freezer storage bags.

colmustard 11-15-2012 06:40 PM

Ok. I keep my mags loaded with the pop tops on them. Just curious because I heard some crap about lip spread.

dragunovsks 11-16-2012 01:41 AM

Not true, if you were talking about aluminum or steel mags I could see it but the plastic Pmags are very thick and stiff. I've got 5 Pmags in the pockets on my ar soft case all fully loaded, they've been there for months without dust covers and they all work fine. Grab an empty pmag and squeeze it together on top, it doesn't easily squeeze.

colmustard 11-16-2012 09:28 PM

Since you mentioned it what about metal mags? I never seen them spread.

xRacerX75x 11-20-2012 06:50 AM


Originally Posted by colmustard
Since you mentioned it what about metal mags? I never seen them spread.

I've never heard of them spreading just from storage, but just last week one of my partners at work had a metal mag split on him during training. It caused the rifle to eject the spent cartridge and some how at the same time eject the first live round in the mag, and then chamber the second live round. But this mag was used and abused for years as a swat duty/training mag.

sputnik1988 11-20-2012 08:51 AM

I've had a PMAG laying around loaded for 2 years, no dust cover, it's fine.

purehavoc 11-20-2012 10:31 AM

I don't think so. I keep 22 p-mags loaded 24-7 and have for over a year . No issues here and I don't keep the dust covers on them

dragunovsks 11-24-2012 11:02 PM


Originally Posted by colmustard
Since you mentioned it what about metal mags? I never seen them spread.

I'd say steel or aluminium are more likely to deform but its still highly unlikely. The problem I have with those mags is if you drop one of somehow damage it the mag work rifht, not an issue with pmags, you can literally run over them with a 5,000 lbs truck and they'll be fine.

I don't use the dust covers either, the last thing I want is something else in the way if I need to slam a mag in and run out the door in a hurry.

jjfuller1 11-24-2012 11:29 PM

I have both pmags and GI. I keep all but one loaded at all times. If they are empty after range time I fill em up at home. Saves a few seconds and its faster to grab a mag and rifle then grab a box of ammo, load the mag, tHen grab said rifle. Also gives me gun related duties while I'm home and not shooting. Not noticed any mag issues thus far. I keep the one empty for dry fire practice and training time.

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