Ics gsg-522 - mp5 a4
 

Is this an older version or is it the newer with the split box design?

http://www.ventureairsoft.ca/include...96876382ac.jpg

I don't know but this thing is damned ugly

Well I suppose from the name it is based upon the .22 "civilian" version of the MP5 which is the GSG-5. I imagine that it would be aesthetically more similar to the GSG rather than the MP5. ie trade marks. Though this is all speculation on my part.