Interesting new mag repair kit

[CS1983]

It appears to be the new USMC PMAG w/ the Army's (POS) EPM follower.
ETA:
NSN (Mag) - https://store.armyproperty.com/produ...th-window.html
Mag authorization to purchase - http://soldiersystems.net/2017/09/28...mag-magazines/
NSN (EPM Follower) - https://doubletapsurplus.com/product...r-magazine-new
OR
https://www.armyproperty.com/nsn/1005-01-630-9508

So they took a good product, and placed a follower in it from the Army's attempt (and failure) at reinventing a solid product.

Yay Army!