The Gun Digest Book Of The AR15 Author:Patrick Sweeney Hunters, military enthusiasts, self-defense experts and target-shooting competitors alike will find favor with a reference devoted to a firearm touted as one of the best small-caliber rifles ever invented. The Gun Digest Book of the AR-15 delivers details about the evolution of the rifle from its introduction to military action in the 1960s to i... more »ts popularity at today's competitions and training centers. This book provides 500+ photos, details on function, barrel options, caliber, weight for various models, and an explanation of AR versus AK. In addition, tips on cleaning and maintenance, information about myths surrounding the AR-15, key legal information and results of product tests from today's major manufacturers are covered. -More than 500 detailed photos help with identification -Catalog listing with specifications for each model assist in collecting and active shooting -Results of product tests for many major models offer valuable insight for users« less