Join Master Gunsmith Bob Dunlap as he gives you the benefit of his expertise and experience again, this time with the ubiquitous Colt Model P of 1873, the World Famous Single Action Army. This is of course the gun all of our western heroes of screen, radio (for those of you old enough), and TV made famous in their Oat Operas. Everything you need to know about getting your gun apart and back together with No leftover parts.
 






History

• How long has the gun been produced?
• When was the gun redesigned?
• What is the difference between:
• The old style “Black Powder” Base Pin Stop, and the modern “Smokeless Powder” Base Pin Stop?
• The old and new style Ejector Rod buttons?
• Old and new style hand?
• Colt and the European copies?

Design and Function

• Bob uses two different “Cut-Away”s to show you the cocking cycle.
• What does the Hand do, and how does it do it?
• What is the proper sequence for the hand and bolt to work together?
• What is “Over Cock”?
• What causes the cylinder to time up correctly for loading and ejection?
• Safety’s on the Colt, U.S. Arms, Uberti, and Armi San Marcos.

Disassembly

• One and two piece grips discussed
• Grip frame and mainspring removed
• Function of the “Black Powder” frame base pin screw shown
• Cylinder removed
• Interaction of bolt and hammer cam shown in place
• Removal of trigger/bolt spring, trigger, and bolt shown
• Hammer removal shown and order of disassembly discussed
• Interaction of bolt and hammer cam shown out of gun
• Loading gate removal shown
• Function of the plunger demonstrated, and correction of ”Floppy Gate”
• Removal and disassembly of the ejector shown

Cleaning & Lubrication

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

Reassembly

• Making sure you have no parts “Left over”

Common Problems and Their Solution

• Proper cylinder timing and three types of hands discussed
• Correct functioning of the first and second steps of the hand discussed
• Correcting hand length (stretching) shown and necessity and method of heat treating explained
• What is “Transitional Bind”, and how do you correct it?
• For competition guns (Cowboy Action or Quick Draw), do you want your gun timed slightly “slow” or “fast”?
• In what order (trigger pull, hand timing, and bolt timing) should you make your corrections?
• The “Trigger Job” explained and shown
• What are “Positive”, Neutral, and “Negative” trigger systems, and why you want one and NOT the others
• What is a “Modified Colt” trigger system and how it saves you seat tip and hammer notches
• Should you modify the bolt/Trigger return spring to reduce the trigger pull weight?
• Why are the newer spring’s legs separated all the way to the screw hole?
• What is the proper travel for the bolt?
• Proper angles for the sides of the bolt, and fitment in frame slot and cylinder notch
• Modifying the bolt leg to correct timing
• What is the minimum acceptable depth of bolt/notch engagement
• How to contour the top of the bolt to stop “Throw-By”
• Special bolt top contour for maximum speed of engagement for speed shooting
• How to increase depth of engagement
• Recontouring the base of the bolt to reduce spring stress and breakage
• Recontouring the hammer spring to reduce cocking effort
• Cylinder end shake, what is it and how do you get rid of it?
• How the one piece grip fits
• Detail of the Uberti safety system

 
If you noticed how often the terms “explanation”, “demonstration”, “what”, and “how to correct” and  are used, you may be getting some idea of why this course is a “must have” for any owner of the Colt Single Action Army Revolver or its clones.

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Instructed by Master Gunsmith Robert Dunlap.
2 hours, 3 minutes

$34.95    $39.95

Bob Dunlap is a renowned expert on most of todays and yesterday’s important AND obscure firearms. He has been a warranty station for most manufacturers, both large and small. His understanding of the design, function, and repair of firearms in general is unsurpassed, and his appreciation of European and exotic arms is legendary among his students. The CZ-52 was an extremely successful Soviet Bloc service pistol, and its hot .30 calibre (7.62x25) cartridge is an amazingly entertaining jack rabbit motivator. The guns have been imported to the U. S. in big numbers since the collapse of the Evil Empire 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:

History

• Pistols produced at CZ (Česká Zbrojovka) in Strakonice, Czechoslovakia from 1952 to 1954 for the Czech military. The brothers Jan and Jaroslav Kratochvíl did the final design work on the pistol after the earlier designs proved unsuccessful. They also designed the CZ-50 which was almost a clone of the Walther PP.
• Pistol is a single action, roller locked, locked breech, semi-auto
• The roller locking system was taken from the German MG-42 to enable it to withstand the pressure of the hotter Czech version (M-48 SMG) of the Russian 7.62x25 PPSH sub-machinegun cartridge
• Many of the guns were refurbished in the mid-‘70’s, with warn parts, barrels, etc., replaced. The guns were hot caustic blued right over the original Parkerizing.
• Guns were accuracy tested and marked in one of four grades
• Guns fairly accurate (some very accurate), reliable, and their cartridge is very flat shooting. Currently it is also relatively cheap on the surplus market

Design & Function

• Roller locking system described and shown
• Definition and demonstration of “Loose Breech”, and why you need to fix it
• Back to the roller locking system
• Fire control system demonstrated and explained
• How the trigger drawbar/disconnector engages the sear
• Operation of the firing pin blocking safety shown and explained
• How the slide actuates the disconnector function of the trigger draw bar
• Safety operation demonstrated and explained
• Thumb safety blocks the draw bar, not the sear
• Third position of the safety drops the hammer to an intercept notch, an unusual feature on a pistol of this vintage
• Ejector identified
• Slide release, where is the button?
• Hammer operation, rebound to safe/intercept notch
• Function of the slide retainer shown

Disassembly

• Extensive disassembly, and instructions on how to take apart those parts/assemblies not disassembled, such as the rear sight
• Field stripping the gun
• Barrel removal and disassembly demonstrated
• Slide disassembly continues with the extractor and firing pin blocking safety
• Magazine disassembly explained and shown
• Unusual grip removal shown
• Complete lower frame disassembly shown in detail
• 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 “’splains” things

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

Reassembly

• Pins, slave and tapered, hook, punches, etc. Helpful tools that may be required to help you get a gun back together easier
• Magazine assembly, and the spring tab doesn’t always cooperate
• Barrel assembly and trouble shooting
• How to repair that loose breech
• Slide reassembly
• Extractor “moment of mass” explained
• Lower frame reassembly
• Final assembly

Accessories

• 9mm Parabellum barrels are available off and on
• Hard rollers are available from makarov.com, the original and Korean barrels that Fed Ord imported can have soft rollers that will tear up the slide as they wear
• Good steel firing pins available from above source and Cheaper Than Dirt as well, a good thing since the originals tend to break
• Magazines from the same sources

If you noticed how often the terms “explanation”, and “demonstration” are used, you may be getting some idea of why this course is a “must have” for any CZ-52 owner, or someone who intends to be.

Bob Dunlap is a renowned expert on most of today’s and yesterday’s important AND obscure firearms. He has been a warranty station for most manufacturers, foreign and domestic, both large and small. His understanding of the design, function, and repair of firearms in general is unsurpassed, and his appreciation of European and 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, 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 US 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 US, 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:

History

• Pistols produced at CZ (Česká 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.
• Česká 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 barrel’s 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

Disassembly

• 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

Reassembly

• 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 pin’s 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 doesn’t give up easily,
• Mainspring and cover reassembled
• Grips and final reassembly

Accessories

• 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 a “must have” for any CZ-75 owner, or someone who intends to be.