I've just examined a Mauserwerk Oberndorf Model 66 in 30-06. Strangest bolt gun I've ever seen. Short receiver in a long action caliber - the rear receiver ring slides back with the bolt on rails. Switch barrel and I believe possibly switch bolt as well so it can handle several different cartridges. Beautifully built, of course. Could someone tell me more about this strange rifle? Is it still made?