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Glock Pistols


Glock Semi-Auto Pistols

Master Gunsmith Robert Dunlap uses a rare Original Factory Cutaway pistol to reveal the intricate inner works of this revolutionary pistol design. The total disassembly and reassembly of this pistol can be intimidating. AGI shows you how step by step. This course is applicable to all models of the Glock even the new compact models 26 & 27. In addition to proper maintenance techniques, you will also learn how to make this great pistol even more reliable.

Bob Dunlap understands the design, function, and repair of Gaston Glocks masterpiece, the modern polymer frame semi-auto pistol, as well or better than anyone else alive does today. Using his famously inimitable style, and a factory cut-away gun, Bob shows you what the parts do and how they do it, even those that you cannot normally see. If you want the quick course on how to get the Worlds First Successful Plastic Gun apart, back together, and operating as intended, then this course is for you (if you want the "long course," look into our basic 108 hour Professional Gunsmith Course.)

Among the items covered are:


  • Discussion of the basic characteristics of the pistol, including the frenzied but erroneous media clamor that it was a plastic gun invisible to airport scanners
  • Use of the SIG designed single lug lock-up and the use of the slight amount of barrel bind to tighten lock-up and improve accuracy
  • Advantages of the polymer grip frame
    Dr. Gaston Glock designed the polymer frame and the gun was designed for the Swiss Army competition for a new standard pistol
  • Unique when accepted for production, but many similar designs have and will follow


Design & Function

  • A look at the early and later plastic boxes and accessories which arrived with the pistol
  • Early and later magazine differences
  • Explanation and demonstration of the Safe Action operation of the striker and striker block
  • What causes the striker block to lift
  • What causes the trigger pull to increase at the end of its stroke, and why
  • How the cam lock system works, viewed from both sides
  • A demonstration of the barrel unlocking and relocking in its recess in the slide
  • A clear explanation and demonstration of how the camming surfaces and locking block combine to drop the barrel out of battery, and cause it to return
  • Loading, extraction, and ejection cycle shown
  • How the striker block and the trigger prevent the gun from firing, no matter how hard it falls on the rear of the slide
  • Why the gun is so safe without a manual safety


  • Extensive disassembly, including the invaluable and time saving advice as to where to be careful to avoid launching small springs and plungers into Never Never Land
  • How the striker is retained
  • Why the extractor operates so well, good design
  • How the lighter and heavier (New York) triggers work, and why
  • How to smooth up the trigger pull
  • How to improve feeding
  • How to ensure perfect ejection
  • Why recoil spring coil bind is designed into the system, and how they keep spring breakage as a result from occurring
  • Similarities and minor differences between S&W Sigma and the Glock, and why Bob thinks the Smith has a better trigger design

Cleaning & Lubrication

  • AGI cleaning & lubrication methods shown, along with the reasons for their use


  • Making sure you have no parts left over

Tuning and Accessories

  • How the sights come off and go back on, and how to keep them there
  • The slide is hard, do not try to mill it
  • Extra capacity mags and extensions
  • Mag loaders
  • Wrist support

Final thoughts

If you noticed how often the terms explanation and visual demonstration are used, you may be getting some idea of why this course is necessary for any Glock owner, or someone who intends to be.

How much does your Professional Course cost? The answer can be found in our intro pack. We recommend to anyone considering our Professional Course that they get the Introduction to Gunsmithing Packet as this packet includes a video with a sample gunsmithing lesson. It also includes an Enrollment Form that lists the costs of each Course level available as well as the material covered in each level.

Do I have to pay $7 s/h on each retail video? No, we discount shipping on multiple video orders. The new website calculates shipping based on weight and destination. In most cases, the actual shipping is less than listed in the catalog.

Is there a time limit to complete your course? No, our course is self-paced. As you complete sections of the course and submit your tests, we provide certification of completion for that portion of the course.

Can I become certified by taking your retail courses? Answers vary. If you are intending to purchase all the videos in our Law Enforcement Armorer's Course, for example, as long as you buy the test separately you can obtain a Certification as a Law Enforcement Armorer once you complete the testing successfully. Otherwise you would need to purchase one of our certified professional courses in order to obtain a profession Gunsmithing certificate.

What does your Professional Gunsmithing Course Introductory Lesson cover?The Introductory Lesson is one hour and includes complete information on how to get started Gunsmithing. You will also learn how to insure reliable auto-pistol feeding and how to prevent jams, checking and adjusting "range" on Smith and Wesson revolvers, how a gas system works on a Colt AR-15, AR-7 trigger repairs, timing and understanding cartridge stops of a Remington 870 and much more! 

Are your Courses guaranteed? Yes! The American Gunsmithing Institute is proud to offer a 100%, "Bulletproof Guarantee." We are so sure of the quality of our Courses and products that you may return any item purchased directly from AGI for a full refund (less shipping) for up to 90 days after purchase date. Defective DVDs and videos will be replaced for up to 1 year. The only question we will ask is: "How did we fail you?"

Does AGI offer other Certified Courses aside from the Professional Gunsmithing Course? Yes. We also offer a Certified Machine Shop Course, complete with Lathe, Mill and general Machine Shop instruction. Additionally AGI offers a Certified Welding Course and a Certified Locksmithing Course.

What do the Disassembly/Reassembly Courses cover? AGI offers D/R Courses that clearly demonstrate the complete process of disassembly and reassembly step-by-step. The Courses use close-up views to provide comprehensive instruction. Each DVD Video Manual covers one specific model or family of firearms and is indexed to help the user quickly find the information that they are looking for. At the price of only $19.97 each (plus s/h), these video manuals are must have support information for anyone who owns one of these firearms.  

What do the Armorer's Courses cover?AGI's Armorer's Courses teach you how to disassemble, maintain, repair and reassemble your choice of the 51 guns featured. These videos are packed with exclusive information and are equal to a complete Factory Armorer's Course! While our Disassembly/Reassembly Courses contain invaluable information, our Armorer's Courses contain so much more. Master Gunsmith and AGI Instructor Robert "Bob" Dunlap explains design and function using exclusive factory cutaway firearm models, giving you close-up details of the internal functions you would not otherwise be able to see. All AGI Armorer's Course DVDs include a FREE printable schematic!    

Are your Instructors experienced in their fields? Absolutely. Master Gunsmith and AGI Senior Instructor Robert "Bob" Dunlap is a widely respected authority in the firearm industry and spent over 35 years as the senior instructor at Lassen College's internationally known Gunsmithing School. Master Gunsmith Gene Shuey is a world class custom gun builder, former world class competitive shooter and current trainer specializing in 1911 and Glock pistols, IPSC limited and open class guns, and high-end custom rifles. Darrell Holland is a well known custom rifle builder, writer and lecturer who is always inventing new performance shooting products. Ken Brooks is a graduate of the renowned Gunsmithing program at Lassen College and continues his journey by working full time for Bob Dunlap. Gene Kelly is the President of AGI and the Gun Club of America. He graduated from Lassen College's Gunsmithing program and worked as a Professional Gunsmith prior to founding AGI. T.R. Graham is a NRA Certified Pistol Instructor and is a known authority, author and Gunsmith specializing in Glocks and other handguns. Master Armorer John Bush is an AGI Instructor and a consultant to manufacturers and importers of military firearms, and is certified as an Expert Witness in firearm cases.

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