I like the MPX, but not in love with it. It's heavy for its size. Heavier than some AR's 's just due to the bulk of the receivers with the width of the buffer springs running side by side of the rear charging handle... just to eject 9mm?

The MP5 is an old design, but I would argue 9mm platforms now are marginally better than a 60 year old design. However, what the newer 9mm platform has going for them is price. No one wants to pay 5-6K on an HK (unless you just have to have everything HK), 3K on a neutered SP5K, and clones are about the same price.

I wanted an MP5 just because I've always wanted one, and they are fun shooters. The lack of F/A does kill the fun factor though. My MKE finally came in on a Form 3 transfer to RA, so I'll form 4 it later this week or Monday. I also got an Omega K from Atlantic, so I'll eventually Form 1 that as well. This one might take awhile as it's more of a side project so I'll get it eventually converted over.