I'm on the hunt for a rifle and pistol that share not only the same ammunition, but ALSO share the same magazines. I know Excel Arms makes a few weapons that deliver, but I've heard some pretty bad reviews on Excel... I also heard that Walther's G22 and P22 can swap mags, but it requires a good deal of modification to the mag's floorplates. Conversion kits for rifles are also acceptable. Any ideas?