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  • Colt M4/AR15 Receiver Extension Castle Nut

    • Colt M4/AR15 Receiver Extension Castle Nut

    Colt

    $9.95
    (31 reviews) Write a Review
    SKU:
    9390020
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    Product Description

    Factory Colt receiver extension castle nut for M4/AR15 type rifles.

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    31 Reviews Hide Reviews Show Reviews

    • 5
      Colt castle nut

      Posted by Aaron Barentine on 26th Dec 2017

      Probably could have gotten a generic for cheaper but wanted to stay with Colt OEM Parts. Good price and very fast shipping. A good company to buy from.

    • 5
      Colt

      Posted by SanchoPanza on 10th Nov 2017

      For A4 Lower

    • 5
      Good

      Posted by Alec Nicholas on 29th Mar 2017

      Good

    • 5
      What I was looking for

      Posted by Alex Verdugo on 26th Dec 2016

      It's a castle nut from colt. You can't go wrong with that.

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