Sounds like the manufacturers for the standard issue magazines was losing money so they pulled some strings to fuck over our troops. Way to go back room politics.
FFS
http://www.military.com/daily-news/2012/05/25/in-reversal-army-bans-high-performance-rifle-mags.html?ESRC=eb.nl
FFS
http://www.military.com/daily-news/2012/05/25/in-reversal-army-bans-high-performance-rifle-mags.html?ESRC=eb.nl