Remington Model 552 Automatic Rifle Manual,5-1/2" x 8-1/2" with 7 pages.Complete instructions with illustrations,exploded view and parts list.Very similar to REMINST31 with a couple different words(Autoloading vs Automatic,etc.)and this one has a cookbook offer on the back cover.The code on the back cover is "Form RD 5349 Rev. 181". Excellent Condition