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colt ar6721

Discussion in 'General Firearm Discussion' started by wacastro, Dec 24, 2012.

  1. wacastro

    wacastro Kitsap Member

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    I just picked up a colt ar6721. This is the first ar I have owned. I have a quick question, the lower receiver is marked .223 , but the barrel is stamped 5.56. So do I go with what's on the barrel, or the lower?

    Thanks.
     
  2. speeddemon94

    speeddemon94 The Rogue Well-Known Member

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    5.56 NATO is Fine in that one. The barrel marking is what the chambering is. And everything I can find on the rifle says that it is a 1:9 twist that is chambered in 5.56.
     
  3. knuckle Head

    knuckle Head southeast Well-Known Member

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    Write down the serial # off the gun, and call Colt, tell them the question and that you have serial number, they will answer all of your questions, their people are friendly and helpful and tell you anything you want to know about a Colt just you supplying them with the Serial #

    Btw, I amsure they are closed today and tomorrow Christmas.

    Contact Us

    CUSTOMER SERVICE INFO@COLT.COM
    (USPS Address for Firearms)

    Colt’s Manufacturing Company LLC
    P.O. Box 1868
    Hartford, CT 06144
    USA

    Tel: 800-962-COLT (2658) * Mon-Fri 9am to 5pm EST
    Fax: (860) 244-1379

    SHIPPING ADDRESS
    (FedEx and UPS ONLY - Firearms mailed via USPS are undeliverable)
    (Overnight Shipping Address for Firearms)

    C.M.C.
    2 Talcott Road
    West Hartford, CT 06110
    USA

    CORPORATE OFFICE INFO@COLT.COM

    Colt’s Manufacturing Company LLC
    545 New Park Ave.
    West Hartford, CT 06110
    USA

    Tel: (860) 236-6311
    Fax: (860) 244-1442

    * A free manual and catalog are available upon request. INFO@COLT.COM

    Contact
     
  4. wacastro

    wacastro Kitsap Member

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    Thanks for the info guys I appreciate it