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AR15.COM
2/20/2008 6:21:28 AM EDT
What are PMAGs made of and will the mag body retain its strength for say, 50 years?  Are they made of a stable polymer or something that will get brittle or lose strength over time?    

I apologize if this question has been asked before.  I used the search function but didn't see anything.
2/20/2008 8:00:03 AM EDT
[#1]
The have ran endurance test on them and are tougher than you think. 10,000 rounds and still going strong from tests. A USGI mag might not last that long.... IMO WarDawg
2/20/2008 11:15:48 AM EDT
[#2]
10000 rounds is good but he is asking i believe if the mag will be as strong 50 yrs down the road... can u run over your 10/07 date code with your 2057 chevy 1500 or would it be weaker like old vinyl siding.
2/20/2008 4:26:56 PM EDT
[#3]
A 2057 Chevy will do no damage to a PMag as they are going to be hovering Chevys by then.
2/21/2008 7:44:39 PM EDT
[#4]
This is the 10 million dollar question. I have a bunch of the Uncle Mikes nylon holsters that have plastic belt mounts on them-about 10-15 yrs. old. Guess what ,they are all breaking making the holster useless. The plastic is just crumbling. I'm gonna buy more c-products stainless 20 and 30 rounders. Geezz, hope my Glocks hold up another 30 or 40 yrs!!!
2/22/2008 4:37:14 AM EDT
[#5]

Quoted:
This is the 10 million dollar question. I have a bunch of the Uncle Mikes nylon holsters that have plastic belt mounts on them-about 10-15 yrs. old. Guess what ,they are all breaking making the holster useless. The plastic is just crumbling. I'm gonna buy more c-products stainless 20 and 30 rounders. Geezz, hope my Glocks hold up another 30 or 40 yrs!!!


I had a pair of 5 year old plastic ski boots literally fall apart on me.  When this question was asked about Glocks, some folks chimed in that they were made of Nylon 6 and in 50 years should still have about 95% of their strength new. (whether that's right or not, I don't know).  I'd like to take the plunge and get a bunch of pmags because everyone raves about their performance but I'd like to know about the longevity of the material.  
2/22/2008 6:56:49 AM EDT
[#6]
How are old AR15 handguards from the 70s still holding up today?
2/23/2008 6:37:03 AM EDT
[#7]

Quoted:
How are old AR15 handguards from the 70s still holding up today?


I believe those were fiberglass.  The fact that milspec now has polymer in use for the handguards does say something though.

Wes
2/23/2008 11:07:10 AM EDT
[#8]
I've got gen I and gen II glocks at the department that are still functional, and while they have seen some heavy use, they are free of cracks.  

I did some recent testing with PMAGs  and intentionally destroyed them by pushing them way beyond what would kill aluminum mags.  The interesting thing is that they continued to work.


I'm no longer stunned by the amount of abuse the PMAGs will take, but I am surprised at how much damage they can sustain, and still function.  
2/23/2008 11:36:13 AM EDT
[#9]
I have one PMag that I've been torture testing.  I can hardly tell that I've been beating it up...


TS
2/24/2008 5:28:28 PM EDT
[#10]

Quoted:
I have one PMag that I've been torture testing.  I can hardly tell that I've been beating it up...


TS




If you are looking at obscene torture testing of a PMAG, take a look at the below link.  I think you will find the level of total abuse that a PMAG can sustain, and still function to be outstanding.

www.weaponevolution.com/forum/showthread.php?t=312
2/24/2008 7:48:11 PM EDT
[#11]

Quoted:

Quoted:
I have one PMag that I've been torture testing.  I can hardly tell that I've been beating it up...


TS




If you are looking at obscene torture testing of a PMAG, take a look at the below link.  I think you will find the level of total abuse that a PMAG can sustain, and still function to be outstanding.

www.weaponevolution.com/forum/showthread.php?t=312


I just read it before coming hear...  I guess I can stop beating mine up...  That's a excellent test and write-up...  The pics are okay too...


TS
2/27/2008 12:38:18 AM EDT
[#12]
I too am curious what kind of shape the plastic will be in later on down the road. Why? I can afford $17 mags, but...can I afford $120 mags? That is what 17 round Glock mags were running a couple of years ago, even if they were $20 to begin with. And that is if you could find them. I fear that we will needs mags that LAST, whether used or not, based on the legislature that we can all guess we will see sadly sooner rather than later.

So, waiting to see som info from MAGPUL on how t hese handle time/sun degredation.
2/27/2008 4:15:43 AM EDT
[#13]
You will die and your body will turn to dust before the plastic of the pmag breaks down.