If you own or work on Glock pistols then you need the information contained on this DVD! Only AGI's armorer's courses instruct you in every aspect of maintenance and repair of your firearms. On this DVD Master Gunsmith and Senior Instructor Robert "Bob" Dunlap teaches you: complete assembly and disassembly (not just field stripping), parts identification, proper cleaning and lubrication and step-by-step instruction in design, function and repair, including: sights, locking systems, magazines, sears, trigger, stocks, accurizing and accessories. The American Gunsmithing Institutes's instructors are the best in the business. We adhere to the belief that you must fully understand how a firearm is designed to work before you can make any attempt to fix or repair it. AGI provides you with this knowledge.