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Matching upper/lower billet machined to fit together

Discussion in 'General Firearm Discussion' started by Ligito, Dec 12, 2013.

  1. Ligito

    Ligito Oregon Active Member

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    I saw this on an AR manufacturers website.

    Matching upper/lower billet machined to fit together.


    If it is made to Mil-Spec tolerances, it should always fit, right?
     
  2. Cameron72

    Cameron72 Harrington, WA Bronze Supporter Bronze Supporter

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    If it's just mil-spec the upper and lower receivers may rattle and clunk. Billet receivers should fit tight.
     
  3. 2Wheels4Ever

    2Wheels4Ever Portland Well-Known Member 2015 Volunteer

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    An acu wedge does wonders in getting rid of the wiggle. Most of the colts used in the military all had a lot of wiggle. Makes them feel cheep in hand, but it does not really affect anything but long range accuracy.