This is a comprehensive armorer’s maintenance course for accuracy international rifles taught by our certified AI instructor, Adam Rehor. This course includes a certification certificate upon completion.


Please contact le.mil@milehighshooting.com if you’re interested in customizing this course for your unit or department. For open enrollment courses, please check out our schedule page.




    You will need an Accuracy International Sniper Rifle*, tool kit, small hammer, metric allen key set 1.5-6mm), parts tray, punch set, bench block, tools for scope and base removal, and cleaning supplies. (Q-tips, rags, oil, brake clean, gun scrubber).

    Scopes will be removed from rifles and will require confirmation of zero after class.

    Equipment/Ammo can be purchased through Mile High Shooting

    *Approved AI Rifle List

    • AE: MK1, MK2, MK3.
    • AW: 308, 300, 338, 50BMG
    • AT: 308
    • AX pre-2014: 308, 338, 50BMG
    • AX post-2014: 308, 300, 338, 50BMG

      WHAT WE Cover


      Serial Number & Proof Marks
      Safety Mechanism & Function
      In-Field Safety Check
      Head Space Gauging

      Stripping & Reassembly

      Bolt Assembly
      Disassembly & Reassembly
      Removal & Refitting Of The Firing Pin & Shroud
      Stripping The Firing Pin From The Shroud
      Disassembly & Reassembly – Shroud Assembly
      Checking Firing Pin Protrusion
      Adjustment of Firing Pen Protrusion
      Checking Safety Drawback
      Safety Mechanism Field Check
      Extractor Removal & Refitting

      Barrel Removal & Replacement
      Standard Barrel
      Headspace Dimension Check
      Muzzle Brake Removal & Refitting

      Action Assembly
      Stripping & Reassembly
      Bolt Catch Removal & Refitting

      Trigger Assembly
      Stripping & Reassembly
      Trigger Box – Removal & Refitting
      Trigger Box – Stripping & Reassembly (as required)
      Trigger Setting
      Lubrication & Checking The Trigger Weight

      Stripping & Reassembly
      Bipod Mounting
      Magazine Catch

      Butt Assembly, Cheek Piece, Adjustable Butt Spike
      Stripping & Reassembly

      Folding Chassis
      Male & Female Catches