Receiver Extension Nut (Castle Nut)

(118 reviews) Write a Review
Stock Status: In Stock
To secure lock plate on an adjustable stock for AR15, M4
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118 Reviews

  • 5

    Posted by Darrell Thompson on Oct 13th 2019

    As always exceptional customer service, product and pricing

  • 5
    Castle Nut

    Posted by possum on Sep 20th 2019

    looks great bought as spare

  • 5
    Always Know What You're Getting

    Posted by Kevin Dixon on Sep 6th 2019

    Quality and reliability.

  • 5
    Good product

    Posted by Scott Young on Aug 26th 2019

    Good product used as replace for one I damaged. It does it’s job.

  • 5
    Did the job

    Posted by Robert Barnhardt on Aug 6th 2019

    Worked great

  • 5
    Works like it should

    Posted by Chuck on Aug 6th 2019

    Its a receiver "castle nut" that works as it should and staked in easily.

  • 5
    Customer review

    Posted by Matthew Tinder on Aug 6th 2019

    Review body is empty

  • 5
    Customer review

    Posted by Robert Wilcox on Jul 17th 2019

    Review body is empty

  • 5
    Mil Spec.Castle Nut

    Posted by Peter La Curtis on Jun 4th 2019

    I always use Mil. Spec. parts for builds and found that The BCM Castle Nut is Mil. Spec. and affords excellent fit and finish. It also sells for a lower price than the Colt Castle Nut and meets or exceeds the same quality standard. It my seem to some that a Castle is not too important, but when you get a cheap and/or non-Mil. Spec. Castle Nut (e.g., made from aluminum) you will likely notice when torqued to spec.