AGI - Products CZ-75, E.A.A Witness Pistols

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CZ-75, E.A.A Witness Pistols


CZ-75, TZ-75, TA-90, Springfield Armory P9,  Bren 10, ArmaLite AR-24, AT-88, IMI Jericho 941, Sphinx M2000, EAA Witness Pistol

    Bob Dunlap is a renowned expert on most of today and yesterdays important and obscure firearms. He has been a warranty station for most manufacturers, foreign & domestic, both large and small. His understanding of the design, function, and repair of firearms in general is unsurpassed. His appreciation of European & exotic arms is legendary among his students. The CZ-75 was an extremely successful Soviet Bloc service pistol, whose production numbers exceeded 1,000,000. The gun was termed by none other than modern technique of the Pistol Guru, Col. Jeff Cooper, and the "best designed DA autoloader available."

    The gun was a very hot commodity on the gray market since it could not be legally imported into the U.S. until 1993, after the collapse of the Evil Empire. This started the Clone Wars that led to the importation of all of the other guns listed above during the period of its unavailability. It and its clones have become exceedingly popular in the U.S., and this course is designed to help all of you owners who love the gun, but are a little mystified about its workings. We use a rare factory cut-away gun that allows you to actually see how the various parts work and interact.

    If you want the quick course on how to get this Czech hot shot semi-auto pistol 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:


    • Pistols produced at CZ (esk Zbrojovka) in Strakonice, Czechoslovakia from 1976 on for the Czech police. The brothers Josef and Frantisek Koucky did the final design work on the pistol.
    • esk Zbrojovka claims the CZ 75 and variants are in service with "more Governments, Militaries, Police and Security Agencies than any other pistol in the world".
    • Pistol is a traditional DA/SA, short recoil, tilting barrel, locked breech, semi-auto
    • The TZ/TA guns as well as the EAA guns were made by Tanfoglio in Italy, under license from CZ
    • Very accurate, reliable, smooth operating, reliable, and feel right in the hand

    Design & Function

    • Barrel lock-up and cam operation demonstrated and explained
    • What stops the barrels rearward travel
    • Loose breech explained and demonstrated
    • How to cure less than minimal lock-up
    • Ramp system explained, why the gun usually feeds reliably
    • Single action operation shown and demonstrated
    • Double action operation shown and demonstrated, corrections to early or late release of the hammer by the drawbar or sear explained
    • Trigger disconnect system demonstrated and explained
    • Firing pin operation
    • Safety systems, old model vs. new model
    • Extractor operation and its clever design shown


    • Extensive disassembly, and instructions on how to take apart those parts/assemblies not disassembled, such as the hammer strut pins
    • Field stripping the gun
    • Slide disassembly with barrel removal, extractor, firing pin and its blocking safety
    • Magazine disassembly shown, both Hi-Cap and 10 round
    • Grip removal shown and mainspring shield discussed
    • Mainspring removal shown
    • Frame mounted safety removal shown and safety detent spring caution given
    • Sear housing and hammer removed
    • Trigger and drawbar removed
    • Drawbar spring and magazine catch spring removed
    • Magazine catch removed
    • Sear housing disassembled
    • You get a good look at how the various parts fit together and interact (particularly the springs) after they are removed from the gun and Bob demonstrates their fit and inter-operation

    Cleaning & Lubrication

    • AGI cleaning & lubrication methods shown, along with the reasons for their use
    • After cleaning, dry with air gun, or in the oven on Warm ~185-200 degrees (metal parts ONLY)
    • Lubing the Bob way, and what kind he likes


    • Magazine assembled
    • Slide reassembly, extractor, firing pin and stop, barrel and recoil spring
    • Magazine catch reassembled, and trigger drawbar spring
    • Trigger re-installed. Its required slave pins dimensions are given
    • Slide stop detent spring re-installed
    • Hammer reassembled
    • Sear housing reassembled, and the dimensions of its required slave pin given
    • Sear housing re-installed in frame
    • Frame mounted safety reassembled with its detent spring and detent, but it does not give up easily
    • Mainspring and cover reassembled
    • Grips and final reassembly


    • Grips
    • Ambidextrous safety
    • Trigger with over travel screw
    • Sights

    Final thoughts

    If you noticed how often the terms "explanation" and "demonstration" are used, you may be getting some idea of why this course is necessary for any CZ-75 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.