There were two, perhaps three, different types of 8mm Mauser chambered Carcano rifles. The most rare type are the Heinrich Krieghoff conversions that were done in early 1945 at a factory in southern
Austria
. These guns only have one reinforcing lug in the stock, don't have a notch cut in the top of the receiver ring, and originally had a wooden block in the magazine which rendered them into singleshots. The serial numbers have a H prefix. Researchers think perhaps 3,000 were converted. These are the only 8mm Carcanos that have legit Nazi markings. I have seen photos of a M38 short rifle, M41 rifle, and IIRC, a M91/38 TS carbine converted by Krieghoff. These guns were allegedly carried by
German
forces in Northern
Italy
(SS Polizei units??).
If you guys want to see a nice Heinrich Krieghoff converted 8mm M91/41 Carcano infantry rifle check out auction 84481480 on the Gunbroker auction website. It has all the characteristics of the late WWII German conversions; electropencilled serial number on the bolt, original serial number xxxxxed out, new serial number with the H prefix, waffenamt stamps, wood plug in the magazine to render it a singleshot, no notch in the receiver ring, and the adjustable part of the rear sight assembly removed. Interestingly enough, the stock is missing the customary Krieghoff reinforcing lug under the receiver, could this be a replacement stock? The rifle's description doesn't say anything about matching numbers on the barrel shank and buttstock, but then again the original sn is Xed out. IIRC, this rifle sold for $776 and had 17 bids. Check it out at
World War I & World War II Collectibles- GunBroker.com
edit. Oops, the winning bid was $796, not $776. IIRC, a HK 8mm converted M38 short rifle sold on GB a few months ago for $400 - $500.
BTW, Kieghoff initially attemped to fabricate 8mm Carcano conversions with a functional magazine, but after a few dozen protypes they gave up due to insurmountable reliability problems. The singleshots were then put into production in March-April 1945.