ok looking closer...the serrations run to the top of the slide instead of halfway, the accessory rail has 3 notches instead of 1, smith and wesson info is printed on the frame instead of the slide, right side no longer says p22, walther logos are smaller and black lettered, the grip has a different pattern, left side of slide doesnt have walther info on it anymore and the p22 is in the middle of the slide, also black lettering that appears to be appearance wise....anyone know for sure if theres anything mechanically different? or if the slide is made of a different material or anything?