Receiver Extension Nut (Castle Nut)

$7.00
(206 reviews)
SKU:
CASTLE-NUT-AR15
Receiver Extension Nut (Castle Nut)
Stock Status:
To secure lock plate on an adjustable stock for AR15, M4
***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

206 Reviews

  • 5
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  • 5
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  • 5
    castle nut

    worked great

  • 5
    Excellent

    I only use BCM hardware

  • 5
    Best I’ve tried

    Just like their buffer tubes, I’ve learned to just buy BCM for my parts to assemble , constant quality is what to expect , from heat treatment to tolerances to fit and finish, my money is spent on BCM parts . GSA

  • 5
    Customer review

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  • 5
    Very solid

    Picked up a tube, castle nut, and spring for a pistol build.
    All are very solid and function as they should.
    A+

  • 5
    Great Quality, Great Fit!

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  • 5
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