Here's the photo of the original Spee-D Loader....




Correct me if I'm wrong, but my 15-3 was modified (Harry) by using a model 10 bull barrel that had a sight pinned to it. You can see that the sighted frame does not line up with the original non-adjustable sight height barrel...








The HB has a low rib and the K-38 has a higher one....

[IMG]http://digitalsushi.com/midashi/website.mirrors/guns/world.guns****/handguns/sw-m10hb.jpg[/IMG]

[IMG]http://digitalsushi.com/midashi/website.mirrors/guns/world.guns****/handguns/sw-m14.jpg[/IMG]