Originally Posted by DONSTER 125
but i thought that the MP5 series had the V2 mechbox?
Yes, MP5 uses V2 box.
My old MP5 had a Systema mechbox in it, so I can't really say whether or not CA V2 internals are good but I owned 2 AK's made by CA. I was just saying that CA V3 internals are not bad.