4 hours. 1 DVD. Noted Glock authority T.R. Graham explains the gun piece by piece, sharing tips and tricks that he's learned from years of experience with this unique pistol. You'll learn about making trigger modifications by switching parts, installing aftermarket parts, and even by modifying the factory originals, with demonstrations of building both a combat and a target trigger. T.R. reviews and evaluates dozens of sight options available for Glocks, explaining the differences between competition and combat style sights and demonstrating the installation of several sights, including laser and night sights. Learn how to install extended mag releases and slide stops and make them work reliably. Coverage includes aftermarket barrels and barrel fitting, plus aftermarket recoil spring and guide rod combinations, explaining why and when to use them. After reviewing a myriad of different magazine and grip accessories, T.R. shows how to combine them to tailor the pistol to you. He covers step by step how to get the most accuracy out of your Glock, and shows you several caliber conversions, including a .22 LR conversion and using the Mech Tech kit to convert a Glock into a rifle.