Buying a Spanish La Coruna large ring mauser with no stripper guide or thumb notch. I have a FR8 and famalier with M43 La Coruna mausers but have no idea about the no thumb notch (commercial?) version. I know M43s were last built in 1957. How about the commercial version? When was it last built? Is it C&R? Don't find it in ATF C&R list and have no luck in Google search. Is it so called Santa Barbara mausers? Does it take K98 parts? Thanks.