ORD 7 SNL G-251. Department of the Army Supply Manual. Group G. Organizational Maintenance Allowances for Tank, Combat, Full Tracked: 76mm Gun, M41. Manual in good condition considering it’s age. The manual is used so look at the pictures. Looks like there may be some water staining to the top part of the pages. All the pages look to be there. If you have any questions please feel free to ask.