I just saw a gun for sale that appears to have the "CK" markings on the shank as discussed in the reference section. Is this one of those? I only as because Alex indicates that this is mostly seen on 1945 91/30's...
Of course.. When I saw the CK stamping in the 'manufacturing' section I failed to double check in the 'Repair Depot Marking' section. 😆 Thanks
It's an CKO marking, not CK. Repair depot of the North Caucasian Military district, Novocherkassk