Building The Custom Mauser ($79.95)

Re-Barreling and Blueprinting The Mauser Rifle (79.95)

You get everything for ONLY 119.00 (+ 9.00 S&H) ...  [read more]

Raise your Mauser from THE DEAD!


Bring back that dead/dying mauser to its former glory with these videos!

$119.00

In this step-by-step course from AGI, Ken demonstrates and explains everything you need to know including: how to determine if it is safe to reline the barrel, barrel liner selection, boring out the barrel, liner installation, extractor fitting and more. For just a few dollars you can restore these old guns and enjoy shooting them again, without having to install a new barrel.

This process is applicable to hundreds of models of .22 LR, obsolete pistol caliber or low power rifles such as the .25-20, .32-20, .38-40, .44-40, etc....  [read more]

Instructed by Ken Brooks
113 Minutes

$49.95

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. He understanding of the design, function, and repair of firearms in general is unsurpassed, and certainly includes the gun that has become the most popular semi-auto shotgun in America, not only among sportsmen, but the military and Law Enforcement as well. In typical AGI fashion, a cut away gun is used so that you can actually see how the various parts function, move, and interact.

If you want the “quick” course on how to get this super popular semi-auto shotgun 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

• Introduced in 1963, one of the best and most reliable semi-auto guns made
• First really successful gas operated shotgun. Designed by Wayne Leeks
• The 1100 was the first shotgun actually designed with the aid of a computer
• The 1100 would fire all types of 2 ¾” loads without adjustments. The 11-87 is a refinement that allows the use of 3” loads as well
• The guns are very strong and will take overloads and plugged barrels that would cause other guns to blow up

Design & Function

• Family overview, the gun was a follow on of the 870 and shares a design commonality with the 740/760 series of rifles and the 11-87 shotguns. The trigger plate/fire control parts of all of these guns are very similar
• Cartridge feeding and bolt lock-up (locking block) are covered in detail as you watch them occur
• Cartridge stop operation, how the primary and secondary function. Their operation is shown and explained. The left side cartridge stop is the secondary stop and is called the interceptor latch
• Gas system operation shown, demonstrated, and explained
• How the cutaway in the barrel ring acts as a gas release, and how the separate impacts of action bar, bolt, and inertia sleeve against the receiver minimizes felt recoil
• Bolt and firing pin operation shown, and the out of battery safety feature
• Operation of the carrier, fire control system, and disconnect cycle demonstrated and explained. Who does what to who, and how
• Troubleshooting tip; Interceptor latch operation. Why the latch was modified to have a deeper face in front of the pivot
• Firing cycle

Disassembly

• Extensive disassembly, and instructions on how to take apart those parts/assemblies not disassembled, such as the inertia sleeve from the action bars, and explanation of why some assemblies are NOT to be disassembled
• Barrel removed and explained
• Magazine spring retainer, spring and follower removed
• Operating handle removed
• Action bar/carrier and bolt removed
• Forearm support shown and discussed
• The bolt disassembly is shown, including the firing pin and return spring, locking block, ejector and its plunger and spring
• Trigger plate removal shown
• Complete trigger plate disassembly shown, including hammer and disconnector, and safety
• Link and cartridge stop removal demonstrated
• Action spring and buttstock removal shown
• 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
• It is probably best not to use the Simple Green on the “O” ring as it will accelerate its deterioration by removing its molybdenum disulfide coating
• 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
• What “Old style” parts should be replaced

Reassembly

• Missing parts that need to be added
• Bolt reassembly including locking block, firing pin & spring, and extractor is shown and the reason given for the later addition of the pin that keeps the locking block from coming out of the bolt when it is removed from gun
• Trigger plate reassembly, beginning with the safety, demonstrated in detail
• Troubleshooting tips and repair; trigger plate assembly
• Troubleshooting tips; extractor (rules), oversize firing pin hole, headspace (how to know if it’s excessive and how to correct it, the “CR” block)
• Magazine tube and spring reassembly
• Action spring reassembly, how to make sure it’s straight, and what to do if it’s not
• Cartridge stop (“feed latch”) reassembly and re-staking
• Buttstock reassembly
• Troubleshooting tips; short cycling causes and cures
• Piston and seal reassembly
• Link reassembly and troubleshooting
• Bolt and action bar reassembly
• Bolt and trigger plate reinsertion
• Piston assembly and barrel reassembly
• Forend reattachment

Accessories

• Scattergun Technologies products
• Stocks; folders, shoulders, and forearms, plastic, and otherwise
• Magazine extensions
• Chokes and barrels
• Colored and extended magazine followers
• Home defense considerations
• Sights
• Spare parts

      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 Remington 1100/11-87 owner, or someone who intends to be.

Bob Dunlap understands the design, function, and repair of these extremely popular “deer woods” guns as well as anyone. These semi-auto and pump action guns are, with the exception of the force causing the action bars to move (hot gas or your hand), are practically identical. In fact, the trigger groups (as well as those on their 870 and 1100 shotguns) ARE identical. This course covers all of the models and variations of this series of rifles.

History

• Discussion of the origins of the guns in 1949, and the reason why they became an instant hit with hunters, particularly in the Midwest, Northeast, and South
• Short history of the Model succession
• Mention of their related successors, the Model 552 and 572 rimfire rifles

Design & Function

• Explanation and demonstration of the bolt lock-up and the unexpected precision of the multiple lugs and recesses
• Observe how bolt cam pins interact with
• Interaction of sear with hammer shown, and hammer plunger’s function with action bar lock/trigger disconnector
• Floating hammer operation shown
• Old and new style magazine catches explained and operation shown
• Action of disconnector lever on sear shown
• Entire fire, action unlock, trigger/sear disconnect and reset sequence shown in detail                 
• Method of trigger stop shown and how to get “Crud” clearance if necessary          
• Identifying right hand and left hand trigger housings, newer models’ plastic and older models’  aluminum housings (plates)                  
• Safety operation is shown, and how to correct the problem if the safety does not work as designed. Once again Bob expresses the oft heard dictum, “Always work on the cheapest part!”
• Operation of trigger & sear, connection and disconnection, as well as the safety, shown outside of gun    
• Bolt carrier and bolt removed and inspected, locking lugs in barrel extension shown, and assembly manner of barrel extension and recoil lug to barrel shown
• Attachment and operation of bolt carrier to op rod shown, and common failures mentioned. Some later guns have the bolt carrier brazed to the action bars
• Mention made that most parts for earlier guns, 740, 742, and 760, are no longer available, but that later model parts can generally be made to fit those guns
• Operation of extractor and ejector explained and shown. Replacement method for early extractors discussed, and why the ejector must not extend past the bolt face rim
• Potential problems with bent action bars mentioned
• Magazine retention explained and shown, as well as adjustments that can be made to trigger housing and magazines to get them to work. Differences between old model and new model magazines discussed
• Loading cycle shown

Differences between Pump and Semi-Auto

• Gas system on 740 shown and explained
• “Timing Delay” explained
• Action bar lock piece functions as disconnector in semi-auto
• Problem with 740 receiver groove battering by the bolt lugs upon recoil shown and explained, and the bolt lock piece designed to cure the problem on the 742’s
• Bar type ejector on early 740’s mentioned and function described
• Difference between 740 and 742 forearm attachment shown and explained, and why the newer is improved
• What the two legged “Spring thingy” at the bottom front of the receiver is and is supposed to do. AHH Ha!!
• Differences between the 7400 and the earlier guns detailed.
• Reduction from 9 bolt locking lugs to 3, and the clever way Remington dispensed with the need for the bolt lock
• Fore end attachment reverts to 740 style, and why it works now
• Gas nozzle change, and why. Also mentioned are consequences of nozzle damage 

Disassembly

• Extensive disassembly (essentially 4 different guns), parts not removed have removal described
• Barrel retention methods shown, methods of removal shown and described, easy to make special removal tools shown and described
• Variations of mag tube spacers described

Cleaning & Lubrication

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

Reassembly

• Making sure you have no parts “Left over”
• Why you shouldn’t confuse the bolt cam pin for the sear pin…or “Oops!”
• How to repair and replace a broken barrel attaching bolt
• Bob gives you bedding and stock mod tips for improving accuracy
• Semi-Auto differences described
• Disassembly and reassembly of semi-auto shown
• Common problems described and discussed
• Gas nozzle adjustment tool shown
• Accuracy modification trick shown
• New model mag catch and spring, disassembly/reassembly shown
• Magazine fitting shown
• Difference in semi-auto magazine shown

Accessories

• What to use
• What to avoid and why

Final Thoughts

• Correcting early opening on semi-auto

If you noticed how often the terms “explanation”, and “visual demonstration” are used, you may be getting some idea of why this course is a “must have” for any Remington 740/760 owner, or someone who intends to be.

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. He understanding of the design, function, and repair of firearms in general is unsurpassed, and certainly includes the gun that has become the most popular repeating shotgun in America, not only among sportsmen, but the military and Law Enforcement as well. In typical AGI fashion, a cut away gun is used so that you can actually see how the various parts function, move, and interact.

If you want the “quick” course on how to get this super popular pump shotgun 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

• First produced in 1949, one of the best and most reliable pump guns made
• Copies made in China and India, the Chinese version (Norinco) is still imported
• Gun comes in many grades and finishes, with a myriad of barrel styles and lengths, Rifle sights, beads, ribs, plain. Stocks come in walnut, birch, and plastic
• The dual action bar was a great step forward and was patented by Remington. It stopped the very common problem of action bar breakage

Design & Function

• Family overview, the gun was a follow on of the 11-48and shares a design commonality with the 740/760 series of rifles and the 1100, and 11-87 shotguns. The trigger plate/fire control parts of all of these guns are, for all practical purposes, identical
• Cartridge stop operation, how the primary and secondary function. Their operation is shown and explained
• The operation of the action bar lock demonstrated and explained
• Cartridge feeding and bolt lock-up (locking block) are covered in detail as you watch them occur
• Action bar operation
• Fire control system, who does what to who, and how
• Safeties; two are automatic, and one is manual. How they work, and why. Out of battery safety features
• Bolt and firing pin operation
• More on cartridge feeding, action bars, cartridge stops in all of their glory with the gun disassembled

Disassembly

• Extensive disassembly, and instructions on how to take apart those parts/assemblies not disassembled, such as the forend from the action bars, and explanation of why some assemblies are NOT to be disassembled
• Barrel and buttstock removed, and explained
• Action bar and bolt removed
• The bolt disassembly is shown and the reason given for the later addition of the pin that keeps the locking block from coming out of the bolt when it is removed from gun
• Trigger plate and magazine spring removal, don’t forget to depress the carrier
• Cartridge stop removal demonstrated
• Trigger plate and carrier disassembly shown, and the hammer assembly is not removed. The reason is given
• Safety removal shown
• 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 to help you get this gun back together easier
• Bolt reassembly, locking block, firing pin & spring, and extractor
• Troubleshooting tips; extractor (rules), headspace (how to know if it’s excessive and how to correct it), firing pin (shapes over the years and why they changed)
• Trigger plate reassembly demonstrated
• Safety reinstallation demonstrated
• Troubleshooting the flex tab system shown, reason for being given, and operation demonstrated
• Carrier reassembly shown
• Troubleshooting; sear/hammer/disconnector leg
• Troubleshooting; cartridge stop reassembly and re-staking shown
• Magazine tube reassembly demonstrated
• Bolt and action bar reassembly
• Trigger plate re-insertion
• Buttstock and barrel reattachment, don’t forget the bolt needs to be half open
• Troubleshooting; flex tab demonstrated in reassembled gun

Accessories

• Safeties, Big Heads and otherwise
• Stocks; folders, shoulders, plastic, and otherwise
• Shell holders
• Colored magazine followers
• Sights and barrels
• Stock and forearm materials
• Chokes and barrel shortening
• Magazine extensions
• Mounting a scope
• Spare parts

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 Remington 870 owner, or someone who intends to be.