I received my STGW 57 and have decided, for now, to leave it as it is. The finish was better than I expected. I did however, make a scope mount for it . I made a copy of the original mount that accepted a Kern scope. It is a dovetail that wedges in the front and is tightened by a thumbscrew in the back. Simple design, but it took me a day to make it. It didn't help that I had to make the tumbscrew from scratch as there is limited clearance over the receiver and I wanted a hex nut in the center of the screw to aid in tightening. I used a Wetzlar scope taken off an HK Stanag mount for a G3. Kern scopes cost as much as the gun. Took it out to make sure than the mount and scope were collimated with the bore and it was pretty much right on. Accuracy testing to come. I did some testing at 100yds with the irons and was only getting around 3 moa, but I was definitely responsible for some of that error.
The original Swiss Kern and mount
My scope and mount
The original Swiss Kern and mount
My scope and mount