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
    Castle Nut works great!

    No issues with fitting and tightening everything down.

  • 5
    Great

    It’s a castle nut. But I can trust it’s made right.

    Good staking grooves.

  • 5
    Good product

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

  • 5
    Customer review

    Review body is empty

  • 5
    Works like it should

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

  • 5
    Did the job

    Worked great

  • 5
    Customer review

    Review body is empty

  • 5
    Mil Spec.Castle Nut

    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.

  • 5
    Castle nut

    Not much to say, it fits and tightens down