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 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



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