Bought my first AG back in high school, a Wischo 55D. Back then I shot it maybe 2x daily as I had much time on my hands. I wore the bluing off the barrel and had it reblued. Excellent guns (esp. for the price) except for the trigger.
I've disassembled it a few times to tune it as it has had 3 springs (the latest is a Maccari). A tricky bear to disassemble/reassemble, but not hard one you know how (the rear site is the trick).
And yes, this Wischo is in the US.....
pics: http://pg.photos.yahoo.com/ph/letmeo...?.dir=/3bbare2
Chuck