Because the phederal org charged with keeping records sucks ass and can't find most stuff registered in the 1968 amnesty (and those phuckers want to administer our healthcare....hope they all get the Corona and.....). MP44 serial number 6225f/45. Rewatted from a registered dewat in 1990. They are no help beyond that. Anyone have any info. Finders fee for legit paperwork. Thanks.