This instructional manual, authored by Patrick Sweeney and published by Gun Digest Books in February 2011, focuses on the repair and performance improvement of shotguns. It covers all major shotgun styles, offering step-by-step instructions with numerous photos to guide users. The manual specifically details work on popular models including the Mossberg Model 500, Ithaca Model 37, Remington Models 870, 1100 and 11-87, Browning A-5, and Winchester Model 1897. Its content is designed to assist with making repairs, improving performance, and adjusting fit for a wide range of shotguns.

The purpose of this manual is to provide comprehensive guidance for shotgun owners, gunsmiths, and enthusiasts. It details essential maintenance procedures, advanced repair techniques, and methods for enhancing shotgun performance and customization. By offering clear, illustrated instructions, this resource aims to empower users to effectively maintain, troubleshoot, and optimize their firearms. This manual serves as a vital tool for anyone seeking to deepen their understanding and practical skills in shotgun gunsmithing.