Cool gun for sure, but at $2,800.00 that’s expensive bragging rights for the initials “H&K” (don’t get me wrong .... I have a real H&K 91). If I was inclined towards an MP5 style weapon (and I’m not since I have a Stribog .... a lot of bang for the buck) I would probably go with a PTR:

[Linked Image from atlantic-firearms-prod.s3.amazonaws.com]

List is around $1,680.00 for the PTR and I’d have a few nickels left in my jeans. Just sayin’ ....