|
|
Post by Pinpin on May 30, 2012 12:04:16 GMT -7
Despite the success of the PMAG, Army officials from the TACOM Life Cycle Management Command issued a “safety of use message†in April that placed it, and all other polymer magazines, on an unauthorized list. The message did not single out PMAGs, but instead authorizes only the use of Army-issued aluminum magazines. The message offers little explanation for the new policy except to state that “Units are only authorized to use the Army-authorized magazines listed in the technical manuals.†Nor does it say what Army units should now do with the millions of dollars’ worth of PMAGs they’ve purchased over the years. www.military.com/daily-news/2012/05/25/in-reversal-army-bans-high-performance-rifle-mags.html?ESRC=dod.nl |
|
|
|
Post by Sctr22 on May 30, 2012 12:28:33 GMT -7
Of course, why give them a durable, lighter weight option? On the other hand, if they need an answer as to what to do with them all...I certainly have a few empty boxes in my garage they can store them in...
|
|
|
|
Post by Cwi555 on May 30, 2012 12:35:00 GMT -7
I've read that article, and so far I've turned up multiple reports of offgasing from they polymer used in the mag. Glock for instance uses a polymer that is resistant to off gasing, but so far my research is telling me pmag does not. Since it is a polycarbon chain, that gas could be an issue for mags stored in mass.
Those are early results, but the more I dig, the more I find it mentioned.
|
|
|
|
Post by Sctr22 on May 30, 2012 12:38:00 GMT -7
If thats true, then I suppose I'll concede and say that I understand their point. That being said...I still know what they can do with all the extras  |
|
|
|
Post by Sctr22 on May 30, 2012 13:02:16 GMT -7
On a side note though, do you know if the Korean Glock mags the same polymer type as the OEM Glock mags or do they produce more off gasing from the originals?
I doubt I would ever stock enough to potentially be an issue, just a curiosity though.
|
|
|
|
Post by Cwi555 on May 30, 2012 13:42:55 GMT -7
I've tested the KCI for off gassing and find no problems. (helium mass spectrometer pressurized sniffer test)
While HMS is usually used for pressure leak test, it is sensitive enough to pick up any other gas present other than helium.
|
|
|
|
Post by Pinpin on May 30, 2012 13:51:10 GMT -7
I've read that article, and so far I've turned up multiple reports of offgasing from they polymer used in the mag. Glock for instance uses a polymer that is resistant to off gasing, but so far my research is telling me pmag does not. Since it is a polycarbon chain, that gas could be an issue for mags stored in mass. Those are early results, but the more I dig, the more I find it mentioned. I glad we have you CWI to explain all this to us simple folk!  |
|
|
|
Post by Cwi555 on May 30, 2012 13:57:59 GMT -7
I called the people I sold my business to, and asked them to run some Pmags through the HMS as a favor. I'll have a definitive answer by tomorrow.
|
|
|
|
Post by WILL on May 30, 2012 14:53:35 GMT -7
I did my own testing on the P-mag. It's mechanically better than its aluminum counterparts. If I was a soldier in war, I'd make it my business to carry Pmags. If the brass didn’t like it, they could F-off. REMFers
|
|
|
|
Post by geron on May 30, 2012 15:02:23 GMT -7
Maybe be more for us now.
|
|
|
|
Post by garret on May 30, 2012 17:17:26 GMT -7
excuse my ignorance but what the hell is off gassing?
|
|
|
|
Post by Cwi555 on May 30, 2012 17:56:13 GMT -7
excuse my ignorance but what the hell is off gassing? Many polymer plastics use volatile chemicals called plasterizers to give the polycarbon structure flexibility and other attributes. The cheaper polymers use fomulas that break down over time and in many cases due to exposure to ultraviolet light. Such a polymer will exhibit strength in the short run but become brittle and weak over the long run. The higher end polymers are stabilized and do not break down in the same fashion. In the case of the cheaper ones, thy off gas those volatile chemicals as the polymer breaks down changing and weakening the over all structure in the process. |
|
|
|
Post by Pinpin on May 30, 2012 17:57:16 GMT -7
excuse my ignorance but what the hell is off gassing? Offgassing is the evaporation of volatile chemicals in non-metallic materials at normal atmospheric pressure. This means that building materials can release chemicals into the air through evaporation. This evaporation can continue for years after the products are initially installed which means you continue to breathe these chemicals as you work, sleep and relax in your home or office. My google-fu is strong. |
|
|
|
Post by Redneckidokie on May 30, 2012 18:57:22 GMT -7
All I know is I will use Pmags that DO work fine over crappy aluminum ones that do NOT until shown other wise.  |
|
|
|
Post by Sctr22 on May 30, 2012 21:15:28 GMT -7
Awesome, thanks for the info. One less thing to worry about. I've tested the KCI for off gassing and find no problems. (helium mass spectrometer pressurized sniffer test) While HMS is usually used for pressure leak test, it is sensitive enough to pick up any other gas present other than helium. |
|
