Primary Arms Has P-Mags For Just $8.99

[Ws6]

Originally Posted By: Doog
I have heard so many different opinions on magazines I just keep a 50/50 balance between metal and plastic. But I only keep the metal ones loaded. Some people say rotate your magazines and others say load them and leave loaded. Lot's of conflicting information out there.

Leaving a mag loaded should be fine.

 

[billt460]

Originally Posted By: Doog
I have heard so many different opinions on magazines I just keep a 50/50 balance between metal and plastic. But I only keep the metal ones loaded. Some people say rotate your magazines and others say load them and leave loaded. Lot's of conflicting information out there.


I have no problem keeping magazines loaded because of springs, tension, or springs supposedly "taking a set". That has all been proven to be nonsense. What wears out springs is cycling, not constant compression. But keeping plastic feed lips under pressure has been proven to cause issues. And not just with P-Mags. Especially in very hot conditions. That is why I only keep metal, or metal reinforced magazines loaded for long periods.

 

[ZeeOSix]

Originally Posted By: billt460
Originally Posted By: Doog
I have heard so many different opinions on magazines I just keep a 50/50 balance between metal and plastic. But I only keep the metal ones loaded. Some people say rotate your magazines and others say load them and leave loaded. Lot's of conflicting information out there.


I have no problem keeping magazines loaded because of springs, tension, or springs supposedly "taking a set". That has all been proven to be nonsense. What wears out springs is cycling, not constant compression.


All I can say in my experience is that I had a firearm with two identical factory magazines. I kept one loaded for many years from the day the gun was bought new, and maybe used in the gun at the range a total of 3~4 times in it life - so that magazine was always loaded. The other magazine was never used or loaded.

I tore both magazines apart years after they were new, and compared the springs to each other. The spring in the magazine that was loaded for years was noticeably shorter than the spring in the magazine that was never used. Only thing I can say that made that happen is spring set due to constant compression.

 

[hatt]

Originally Posted By: Ws6
Originally Posted By: Robenstein
The USMC did ban Pmags along with all other polymer mags back in 2012 after voicing concerns over compatibility. The Army did ban them but later reversed them. A simple Google search will show this as well as Magpuls reaction statement to the USMC ban. One of the reasons the Emag came out was to address the compatibility issues Pmags were facing in regards to weapons that function fine with STANAG magazines.



Hah! So they did, because of IAR compatibility. I thought it was like the ARMY ban where the ARMY said "oh, no, we didn't mean it..."
The Army copied the PMag geometry when they designed their new mag because M855A1 was eating up feed ramps. Magpul also filed a FOIA request to get a study released that showed Pmags were much more reliable than USGI.

 

[Ws6]

Originally Posted By: ZeeOSix
Originally Posted By: billt460
Originally Posted By: Doog
I have heard so many different opinions on magazines I just keep a 50/50 balance between metal and plastic. But I only keep the metal ones loaded. Some people say rotate your magazines and others say load them and leave loaded. Lot's of conflicting information out there.


I have no problem keeping magazines loaded because of springs, tension, or springs supposedly "taking a set". That has all been proven to be nonsense. What wears out springs is cycling, not constant compression.


All I can say in my experience is that I had a firearm with two identical factory magazines. I kept one loaded for many years from the day the gun was bought new, and maybe used in the gun at the range a total of 3~4 times in it life - so that magazine was always loaded. The other magazine was never used or loaded.

I tore both magazines apart years after they were new, and compared the springs to each other. The spring in the magazine that was loaded for years was noticeably shorter than the spring in the magazine that was never used. Only thing I can say that made that happen is spring set due to constant compression.


All springs will take an initial set. Had you used the other magazine for a day at the range, I bet it would end up looking similar.

 

[Ws6]

Originally Posted By: hatt
Originally Posted By: Ws6
Originally Posted By: Robenstein
The USMC did ban Pmags along with all other polymer mags back in 2012 after voicing concerns over compatibility. The Army did ban them but later reversed them. A simple Google search will show this as well as Magpuls reaction statement to the USMC ban. One of the reasons the Emag came out was to address the compatibility issues Pmags were facing in regards to weapons that function fine with STANAG magazines.



Hah! So they did, because of IAR compatibility. I thought it was like the ARMY ban where the ARMY said "oh, no, we didn't mean it..."
The Army copied the PMag geometry when they designed their new mag because M855A1 was eating up feed ramps. Magpul also filed a FOIA request to get a study released that showed Pmags were much more reliable than USGI.


Yep, instead of buying PMAG's, the military spent MY(and presumably YOUR) tax dollars on re-inventing them. They do this with a LOT of gear.

 

[hatt]

Originally Posted By: Ws6


Yep, instead of buying PMAG's, the military spent MY(and presumably YOUR) tax dollars on re-inventing them. They do this with a LOT of gear.
Taxpayers are stupid. Proven over and over. From Magpul:
Quote:
The M3 PMag (GEN M3 PMAG BLK NSN: 1005-01-628-5106) has always run the Army's new Enhanced Penetrator Round (M855A1), flawlessly without accelerated damage to the feed ramps of the M4/M16/HK416.

The new USGI uses feeding geometry "strikingly" similar to that introduced with the original PMag M3 8 years ago but it still suffers from reliability and durability issues inherent with the ALU body. Not to mention the PMag offers round remaining feature and has a US Govt cost substantially lower than the new magazine.



Quote:
We have filed a FOIA request to obtain the official testing data that shows the PMag M3 significantly out preforms any other magazine using both conventional ammunition and 855A1


I wonder how many millions it's going to cost us for someone to help the military design a polymer bodied mag. All the while we coul dhave just been buying cheap and reliable Pmags.

 

[Ws6]

Originally Posted By: hatt
Originally Posted By: Ws6


Yep, instead of buying PMAG's, the military spent MY(and presumably YOUR) tax dollars on re-inventing them. They do this with a LOT of gear.
Taxpayers are stupid. Proven over and over. From Magpul:
Quote:
The M3 PMag (GEN M3 PMAG BLK NSN: 1005-01-628-5106) has always run the Army's new Enhanced Penetrator Round (M855A1), flawlessly without accelerated damage to the feed ramps of the M4/M16/HK416.

The new USGI uses feeding geometry "strikingly" similar to that introduced with the original PMag M3 8 years ago but it still suffers from reliability and durability issues inherent with the ALU body. Not to mention the PMag offers round remaining feature and has a US Govt cost substantially lower than the new magazine.



Quote:
We have filed a FOIA request to obtain the official testing data that shows the PMag M3 significantly out preforms any other magazine using both conventional ammunition and 855A1


I wonder how many millions it's going to cost us for someone to help the military design a polymer bodied mag. All the while we coul dhave just been buying cheap and reliable Pmags.


M855A1

Stolen from Liberty by the US Military. Each round now costs tax-payers a penny or so to royalties to Liberty, since they won their case. Plus an initial lump-some.

 

[Robenstein]

Not the first time the military steals things from private entities. Most people don't know this, but the 1903 Springfield resulted in a lawsuit because it violated a couple Mauser patents. The government lost the lawsuit and had to pay penalties and royalties to the German firm.

 

[Ws6]

Originally Posted By: Robenstein
Not the first time the military steals things from private entities. Most people don't know this, but the 1903 Springfield resulted in a lawsuit because it violated a couple Mauser patents. The government lost the lawsuit and had to pay penalties and royalties to the German firm.



Interesting! I'm not very shocked, though.