Stopped by the local gun show this weekend and walked out with a 46m. She needed some clean up as the previous owner must have Let her get wet and sit. Some slight surface rust that cleaned up on but no beauty queen here. Good news is she shoots up to spec (460ish) so no teardown needed. No sights as it came with the b square mount for a red dot. Mounted one up and now trying to figure out 10m pistol shooting rather the rifle. Pretty cool little gun for under a c note. Anyone have any exp with these? Anyway to tell it's age?