American Gunsmithing Institute AR-15
American Gunsmithing Institute: DIY AR Upgrades

Now that you have your AR-platform rifle picked out—whether it’s in 5.56mm or 6.8 SPC—you’ll need to start accessorizing! If you want the quick course on how to design and build the ultimate AR, you’ll want to check out the American Gunsmithing Institute’s new DVD course: The AR-15: Practical, Tactical or Tacti-Cool, hosted by master gunsmith Sergeant Mark Foster. Foster has over 30 years of gunsmithing experience and is a 20-year veteran of a California sheriff’s department where he is the chief armorer and training Officer.

  • RELATED: AGI Releases DVD-Based Certified AR-15, M4 Riflesmith Course

In this American Gunsmithing Institute course, you’ll see many examples of triggers, grips, optics, lights, rails, barrels, stocks, muzzle brakes, compensators, flash suppressors, sights, handguards, gas systems and much more. For each category, Foster outlines what works well, tells the viewer what to avoid and explains why. His daily field experience, combined with his armorer experience working on fellow officers’ weapons, gives him practical knowledge regarding the reliability and functionality of each of these options.

After reviewing the accessories thoroughly, Foster builds a variety of “mission-oriented” ARs and reviews what he chose for each and why. For example, he tailors the AR for CQB, general hunting, SWAT, 3-Gun, varmint hunting, home defense, plinking and zombie killing, just to name a few.



After watching this American Gunsmithing Institute course, you will be able to design and build your own ultimate AR. Foster also discusses and shows some of the tools needed for changing barrels and handguards, but more importantly, he demonstrates step-by-step how to change a barrel and install a free-floating handguard. This DVD is a must-have for any AR enthusiast, and it’s available for only $79.95.

For more information about AGI, including its wide-ranging course catalog, visit or call 800-797-0867.

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