The most complete guide to the finest double-barrel side-by-side shotgun made in America! Fans of this famous firearm will love this book, designated by the Olin Corporation as "the official history of the Model 21 Shotgun." Inside, readers will find complete coverage of the evolution of the Model 21, from the early years to 1990. Beginning with a discussion of the early development, successes and innovations in the model, the book delves into a complete exploration of frame innovations, stampings and sizes; barrel production, markings and grades; rib types; and stocks and forearms. Additional chapters cover custom, engraved and experimental models, production and sales figures, and contain an in-depth discussion of The Custom Years (1960-1990). 375 detailed photos and illustrations showing the evolution of the firearm, 8-page color section. 360pp.