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Posted: 12/18/2016 10:35:37 AM EST
Mil vet and active duty question.

I have both. I've never had problems with either. I have a a couple of cans of 20-rounders to go with my VN era slick side look-alike.

However, metal will dent and poly won't.

What are your thoughts?
Link Posted: 12/18/2016 10:36:35 AM EST
Obvious answer is obvious;

GET BOTH

Especially at current prices.
Link Posted: 12/18/2016 10:36:45 AM EST
I broke my first magazine yesterday. It was a pmag. I dropped it and it split down the spine.
Link Posted: 12/18/2016 10:38:09 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By NUJbrown:
I broke my first magazine yesterday. It was a pmag. I dropped it and it split down the spine.
View Quote

Empty or full?
Link Posted: 12/18/2016 10:38:41 AM EST
Sit some plastic out in the sun for a few years and see how brittle it becomes. 
Link Posted: 12/18/2016 10:40:02 AM EST
[Last Edit: 12/18/2016 10:40:59 AM EST by ShadowAngel]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By NUJbrown:
I broke my first magazine yesterday. It was a pmag. I dropped it and it split down the spine.
View Quote


Anything can break. I've had broken polymer mags and broken metal ones. Do enough shooting from positions that aren't at a bench, and it happens. I've had more failures out of metal mags (still not many. 2 total), due primarily to denting which keeps the follower from operating correctly.
Link Posted: 12/18/2016 10:42:06 AM EST
I have way more metal ones then plastic ones and the only issues I have had with the metal ones were from cheap ban era mags.
Plus metal ones fit and drop free with ease in every gun I own and I don't have to worry about what gen plastic mag I may grab if it will drop free on my gun.

While I like both I'm not going to get rid of something that works.

One thing I've noticed is I am becoming a 20rnd mag whore lol.
Out of the 400 or so 20 rounders I have 99% are metal
Link Posted: 12/18/2016 10:42:08 AM EST
Get both.

Lots of threads on this. Nothing wrong with quality GI mags. Nothing wrong at all. Personally, Lancer's are my favorite. You get the best of both worlds, but the Smoke ones are expensive.
Link Posted: 12/18/2016 10:42:10 AM EST
I finding I prefer good metal mags over polymer mags.

Mainly because they drop free easily from any lower I put them in & seem to be just a reliable. I have a 20 round p mag that can't get past the 5th round without having a feed issue (I know this is not true for all mags just my experience)
Link Posted: 12/18/2016 10:42:11 AM EST
While I know plenty of people love pmags, I get malfunctions from time to time with them.

My most bomb proof, feeds everytime magazine are a batch of 10 Teflon coated BCM mags.

Just my experience.
Link Posted: 12/18/2016 10:43:45 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By NUJbrown:
I broke my first magazine yesterday. It was a pmag. I dropped it and it split down the spine.
View Quote

Magpul will replace it
Link Posted: 12/18/2016 10:46:44 AM EST
[Last Edit: 12/18/2016 10:47:26 AM EST by sporter]
Start shooting competitively and you'll realize that there is no perfect magazine.

All magazines if used on a regular basis will require some sort of maintenance at some point. This would include but not limited to cleaning, reshaping, sanding, spring replacement (and or modification) etc.

And then when you have the mags running well, after about a season or two of abuse, you'll replace them.

With AR mags, being that they are so cheap; most likely you'll just junk the mag and replace.
Link Posted: 12/18/2016 10:46:46 AM EST
Originally Posted By TontoGoldstein:
Mil vet and active duty question.

I have both. I've never had problems with either. I have a a couple of cans of 20-rounders to go with my VN era slick side look-alike.

However, metal will dent and poly won't.

What are your thoughts?
View Quote


Easier to pop a dent out then fix shattered plastic.
Link Posted: 12/18/2016 10:48:34 AM EST
[Last Edit: 12/18/2016 10:55:37 AM EST by ShadowAngel]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By ericoak:


Easier to pop a dent out then fix shattered plastic.
View Quote


Harder to shatter plastic than dent aluminum. Grab a poly mag and a aluminum mag and give each a decent smack on the side with a hammer. Metal mag will in all likelihood be ruined or require repair. Poly will be just fine.
Link Posted: 12/18/2016 10:55:10 AM EST
Metal ones are smaller and don't split down the spine. 
Link Posted: 12/18/2016 11:00:34 AM EST
Buy whatever has a better sale on it.

People tend to forget that mags are disposable commodities.
Link Posted: 12/18/2016 11:02:19 AM EST
[Last Edit: 12/18/2016 11:03:33 AM EST by Casval214]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By tango1978:
Sit some plastic out in the sun for a few years and see how brittle it becomes. 
View Quote

Drop and slam a metal mag home a few hundred times and see how long it lasts.

The superior magazines are Lancers though.
Link Posted: 12/18/2016 11:02:38 AM EST
PMAG is best mag.

[thread/]
Link Posted: 12/18/2016 11:04:07 AM EST
Lancer, best of both worlds.
Link Posted: 12/18/2016 11:05:53 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By CarrierGas:

Empty or full?
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By CarrierGas:
Originally Posted By NUJbrown:
I broke my first magazine yesterday. It was a pmag. I dropped it and it split down the spine.

Empty or full?


Full of m855
Link Posted: 12/18/2016 11:05:56 AM EST
Metal AR mags wull fit in all AR mag firearms, but some pmags will not. Advantage metal. I am selling all my pmags for metal.
Link Posted: 12/18/2016 11:07:20 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Casval214:

Drop and slam a metal mag home a few hundred times and see how long it lasts.

The superior magazines are Lancers though.
View Quote



If I get a couple hundred cycles out of a $7 magazine I feel like I got my money out of it.
Link Posted: 12/18/2016 11:08:54 AM EST
Loaded long term storage is where metal feed lips win.   Other than that I like plastic ones.
Link Posted: 12/18/2016 11:09:53 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By tango1978:
Sit some plastic out in the sun for a few years and see how brittle it becomes. 
View Quote

put a steel GI mag in the elements for a year and see what happens
Link Posted: 12/18/2016 11:10:19 AM EST
wish i got a stainless lower when they were out. don't care the weight.
Link Posted: 12/18/2016 11:11:14 AM EST
[Last Edit: 12/18/2016 11:11:47 AM EST by cavedog]
http://www.ar15.com/forums/t_3_118/677135_High-round-count-AR-M4-s--over-100-000-rounds--and-how-they-have-handled-on-our-range.html


- USGI mags have outlasted all of the other brands. We use UGSI (Brownell's with tan follower) and on a mag for mag basis, they have outlasted Pmags and a few of the other mags that we get from mfg'ers with new weapons. We don't have to worry about various generations with different weapons like the MR556, SCAR, F2000, Tavor or a couple of others that use AR15/M4 magazines.
Link Posted: 12/18/2016 11:12:11 AM EST
we have so many classes where we have students and instructors dropping and throwing mags that I only teach with pmags now. The ones that did break were because of the tabs, my L-plates did protect the ones that had them on there.
Link Posted: 12/18/2016 11:14:53 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TLD05:
While I know plenty of people love pmags, I get malfunctions from time to time with them.

My most bomb proof, feeds everytime magazine are a batch of 10 Teflon coated BCM mags.

Just my experience.
View Quote


Same. D&H teflon coated from BCM or PSA (same mag, diff stamp) are what I keep loaded for 'the day'. I love my Pmags for range/vehicle.
Link Posted: 12/18/2016 11:15:53 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By NUJbrown:
I broke my first magazine yesterday. It was a pmag. I dropped it and it split down the spine.
View Quote


That's actually an advantage. You KNOW when a Pmag is bad and needs to be thrown away. As magazines are meant to be expendable. Where as a metal magazine, it can be far more subtle that the magazine is bad, until you try to use it.
Link Posted: 12/18/2016 11:16:19 AM EST
Material science marches ever onward...
Link Posted: 12/18/2016 11:19:03 AM EST
I am able to get a longer COAL with metal mags.
Link Posted: 12/18/2016 11:19:19 AM EST
Wonder why the main moving parts on vehicles are still made of metal?

Link Posted: 12/18/2016 11:20:24 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Casval214:

Drop and slam a metal mag home a few hundred times and see how long it lasts.

The superior magazines are Lancers though.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Casval214:
Originally Posted By tango1978:
Sit some plastic out in the sun for a few years and see how brittle it becomes. 

Drop and slam a metal mag home a few hundred times and see how long it lasts.

The superior magazines are Lancers though.


I do like Lancer 20rnd. mags, but I don't think they're making those for 5.56 anymore.

The first 30rnd. Lancer I had would release between 1 to 3 rounds EVERY TIME unless it was gingerly inserted.
I posted something about it in a thread here and Lancer contacted me and replaced the magazine free of charge.
The replacement magazine did the exact same thing, so I'm not a fan of Lancer 30rnd. mags.
Link Posted: 12/18/2016 11:23:05 AM EST
I have USGI mags in my SHTF gear, Pmags to replenish them and Lancers in the ready to go weapons.
Link Posted: 12/18/2016 11:23:39 AM EST
mags are expendable items... almost disposable. I don't trust polymer long term. I have colt 20 round mags that are likely 30 years old... maybe 40 years old... still work perfectly... will polymer work when 40 years old? maybe. I have pmags as well.... I love them.

mags are disposable.... buy a bunch, cause all of them will eventually fail.
Link Posted: 12/18/2016 11:25:23 AM EST
Some lowers I've purchased didn't like pmags.

I will keep USGI, PMAGS, and Lancers around for this exact reason.
Link Posted: 12/18/2016 11:25:31 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By LS1POWERED:
Loaded long term storage is where metal feed lips win.   Other than that I like plastic ones.
View Quote


I kept 2 loaded Pmags with my rifle for years, with no problem. Currently, I'm using ETS mags. with the moulded in coupler. So far, so good, though it's only been about 6 months.

I do have an old Magpul E-mag (remember those) that's been loaded in the trunk of my car for about 9-1/2 years and it works fine.
Link Posted: 12/18/2016 11:26:43 AM EST
There are pros and cons to both. With my metal GI mags and magpul anti tilt followers, I have never had a feeding issue with mine.

There is a downside to polymer mags. On our hot and humid summers when using them, they will not drop free from the magwell due to the temperature, moisture, and expansion. This applies to the Pmags, Lancer, and HK mags i've witnessed.
Link Posted: 12/18/2016 11:26:58 AM EST
For us in ban states, Metal is the only game in town
Link Posted: 12/18/2016 11:27:41 AM EST
I prefers good ol' USGI mags.

Although I do prefer PMags using PMags in my NPAP.
Link Posted: 12/18/2016 11:30:06 AM EST
I've got a decent pmag stash, so I find myself buying more USGI mags as of late. There's nothing wrong with either. I like variety.
Link Posted: 12/18/2016 11:32:42 AM EST
[Last Edit: 12/18/2016 11:34:12 AM EST by Winston_Wolf]
... polymers creep. Thermal cycles under load can deform over time. That's why you should use the covers provided by Magpul if keeping their mags loaded
Link Posted: 12/18/2016 11:34:27 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By tango1978:
Sit some plastic out in the sun for a few years and see how brittle it becomes. 
View Quote


Amen. Plastic will degrade over time. In the days when we were worrying about total mag bans, people stocked up on Pmags as if they were going to go NFA. Decades later, I'd rather have aluminum.
Link Posted: 12/18/2016 11:35:27 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Blackhawk5:
There are pros and cons to both. With my metal GI mags and magpul anti tilt followers, I have never had a feeding issue with mine.

There is a downside to polymer mags. On our hot and humid summers when using them, they will not drop free from the magwell due to the temperature, moisture, and expansion. This applies to the Pmags, Lancer, and HK mags i've witnessed.
View Quote

This is my favorite combo also. 
Link Posted: 12/18/2016 11:39:46 AM EST
[Last Edit: 12/18/2016 11:47:38 AM EST by jmorg51]
Someone load a Pmag, go outside where it's REALLY cold, and drop it on concrete,

While you're out there, check zero on your Eotech too!
Link Posted: 12/18/2016 11:48:10 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Lexington:


Amen. Plastic will degrade over time. In the days when we were worrying about total mag bans, people stocked up on Pmags as if they were going to go NFA. Decades later, I'd rather have aluminum.
View Quote
Really depends on how you look at it.  I'm willing to bet that a Pmag will survive longer in a rifle that is used heavily....they will last better in a vest that's beat around.....and they will stand up to more abuse than metal.  I've seen plenty of aluminum stanag mags that were busted because of being dropped on their baseplate too much.  The metal fatigues and the baseplate becomes loose.

 Metal will last longer if they are stored loaded though.....so it's a question of use, is it not?  
Link Posted: 12/18/2016 11:55:15 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By fla556guy:
Really depends on how you look at it.  I'm willing to bet that a Pmag will survive longer in a rifle that is used heavily....they will last better in a vest that's beat around.....and they will stand up to more abuse than metal.  I've seen plenty of aluminum stanag mags that were busted because of being dropped on their baseplate too much.  The metal fatigues and the baseplate becomes loose.

 Metal will last longer if they are stored loaded though.....so it's a question of use, is it not?  
View Quote


My first post in this thread linked to a real world test of just that.  Henderson Defense in LV has a number of threads about what lasts and what doesn't; USGI mags outlasts everything in high count use.
Link Posted: 12/18/2016 11:55:49 AM EST
I like USGI since they are lighter and wont deform if stored loaded, which is how i store my mags. I guess if you are storing them empty, then polymers would be the way to go. In the end depends on the end user.
Link Posted: 12/18/2016 11:58:21 AM EST
[Last Edit: 12/18/2016 11:58:55 AM EST by zebfishzap]
The metal NHMTG 20-rounders were recommended to me years ago for high power competition, mine have been very reliable when brand new without any modifications. Too bad they aren't being manufactured anymore, from what I have read on vendor sites.
Link Posted: 12/18/2016 11:59:51 AM EST
I thought the plastic ones had issues in some rifles?

Also, I've heard they tend to slightly push up on the bottom of the bolt carrier?

Link Posted: 12/18/2016 12:00:42 PM EST
Metal mags work better for scraping ice from your windshield, and a few other non-ammunition-feeding tasks.

I get both.
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