The book is a practical repair manual. The first section covers disassembly, inspection, basic checks, parts identification and interior servicing, reassembly refitting, further parts checks and basic repairs.The second section covers the most often requested shop work, including some of the more advanced bench gunsmithing techniques. There is extensive coverage to mechanical accuracy work, making methodical and precise mechanical adjustments, including: refitting slide and frame rails, tightening of certain tolerances, match barrel installation, trigger, hammer and sear work.This shop manual covers just about everything worth knowing on the subject of repairing, accurizing, trigger/sear work, action tuning, springs, bushings, rebarreling, and custom .45 modifications.