[Zack The Ripper]

As far as I know, the upper is still a three piece "monolithic" upper. Receiver, top rail, and RAS/barrel set.

Have seen complaints regarding the top rail on the upper coming loose after awhile, but then there's also just as many people saying "mine's solid with no issues".

The receiver quality and look is what really draws my attention to the MKM. I know with WE rifles there are more aftercare receiver options available, however I don't have them in front of me to compare to stock WE receivers nor PTS receivers.

I'm torn as the overall quality of the PTS stuff seems better, but there seems to be much more market availability for aftercare WE internal and external upgrades. The magazines are more available and less expensive as well.