The only really detailed gunsmithing and repair manual on these Colt revolvers ever printed. 100's of crystal clear photos and illustrations. Covers troubleshooting & problem solving, parts inspections, and complete repair, rebuilding, timing & accurizing of the Colt D, E, & I Frame models, Python, Detective Special, Official Police, Diamondback, Agent, first model Trooper, Police Positive, Officers Model Target, Army Special, and other Colts with similar lockwork. Special emphasis is placed on rebound lever fitting and adjustment; cylinder bolt fitting; cylinder hand fitting and adjustment, and proper interaction of these critical action parts to provide instant bolt pickup, on-time cylinder rotation, and correct cylinder bolt drop timing. This book cuts through and dispels all myths about these superb revolver actions. 224 pages.