I just acquired one of these and will be shooting it for the first time this coming Wednesday. I have never been all that impressed with most of the 22 "clones" even finding one of GSG's other offerings, the MP5, to be rather Airsoft feeling. I found my SIG 522 to feel more like the real thing, but the STG 44 nails the feel of the original. I've been around the real McCoy and GSG got this one right. Now that the STG44 has been introduced next comes the MP40.
The only thing is that it is "only" a 22, but it will see a lot more rounds that way than it would if if it was 7.92 Kurz.