American Gunsmithing Institute (AGI) Technical Manual & Armorer's Course Video "Remington 740/760 Series Rifles" DVD

Product #: 949618 AGI #: 1484 UPC #: 809237014848
$34.49

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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.

Using a cut-away gun and the important variants, Bob shows you everything you need to know about getting them apart and back together again, and understanding the changes along the way and why they were made. The weaknesses of the versions, and their strengths, are shown and explained as only the Master can. If you want the quick course on how to maintain these guns, and operating as intended, then this course is for you (if you want the long course, look into the basic 108 hour Professional Gunsmith course). 135 minutes.

Topics Include:

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 eje
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