Earlier today, at 191737Z, the USMC issued a message entitled, “M4/M16 SERIES/M27 MAGAZINE GUIDANCE UPDATE”, directing which magazines will be used by Marines with the M4/M16, M27 and M249.

In addition to the Army’s new Enhanced Performance Magazines (NSN 1005-01- 630-9508) which will replace the legacy magazine in the stock system, PM Individual Weapon Systems also authorizes the GEN M3 PMAG in Black (NSN 1005-01-615-5169) and the new Medium Coyote Tan (NSN 1005-01-659-7086). Of note, the Army’s EPM is authorized for training use only!"

"Not only that, it’s the only magazine authorized for use in combat."

--
Of the Troops & For the Troops

http://www.thefirearmblog.com/blog/2016/07/26/us-army-introduces-new-enhanced-performan...

Picture in the article shows the various magazines it is supposed to replace. The green follower mag is the one we were using in 2007. Takeaway from all this: Army Ordinance spent years developing a better magazine, which apparently doesn't work as well as a commercial off-the-shelf item that already existed. There's a broader lesson there that those who worship at the altar of government refuse to learn.