I looked at a newly arrived Kahr Deluxe Semiauto rifle, with removable buttstock, and listed in the dealer catalog as shipped with a 50rd drum and a 30rd mag. It did not arrive at the dealers with a 50rd drum, in fact the foam diecut was still in the drum pocket. The dealer wasn't happy. The one 30 round magazine included is a new production magazine. There are no markings anywhere on the body, and the hole in the back is a perfectly round hole, 1/10" higher than a GI mag. Have these been around for a while, or is this something new?