I did check the Remington website. The Sportsman 58 was made from 1958-1963, but nowhere on the website did they have a PDF file for a manual or any disassembly info. I e-mailed them for anything they could tell me, but I figure that'll take a few days. Thought I'd check here, also. This one is mint, no blueing wear or dings on the wood. ,It has a 26" Modified bbl w/o a rib. Thought I'd hunt grouse with it, on days I didn't feel like cleaning my primary scattergun, a Pedersoli SxS 12ga muzzleloader.