I had one and traded it. Not the same as an actual MP5 obviously. The receiver is not folded from one piece but two halves bolted together. None of that roller bolt goodness of the actual HK.

Once you've shot an actual MP5, the shine will quickly fade from the 22lr version and a 10/22 or Marlin 60 will function better in my experience.

Sorry to be a killjoy.