What are the threads on an Accuracy International rifle?

Discussion in 'Technical Bulletins and FAQs' started by Zak Smith, May 6, 2011.

  1. Zak Smith Operations

    • Instructor
    Zak Smith
    UK-spec barrels with muzzle threads are M18x1.5 (metric)

    As of winter 2010/2011, AI-North America (AINA) is shipping rifles with barrels from a US manufacturer. These barrels are threaded 3/4-24 (US standard).

    This confuses things somewhat.

    You can tell the difference because 3/4-24 threads have a pitch of approx 0.042". M18x1.5 threads have a pitch of approx 0.059".

    If you aren't sure, check with your AI dealer or give us a call.
     
  2. Zak Smith Operations

    • Instructor
    Zak Smith
    I have been told that some barrels US-spec have been threaded 5/8-24. It's best to verify thread pattern when ordering your rifle.
     

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