I can not imagine this Russian double for $6-800 is going to be anything but a POS. I have heard that the barrels are not actually regulated. You have to do it with a set screw

Well, actually I guess they would be ok if you just wanted to shoot holes in the barn. Then you would not be able to miss. I had a Merkel once. I did not like the way it handled and it was so butt fugly that after six months I was wondering what I was thinking when I bought it.