Receiver Extension Nut (Castle Nut)

(133 reviews) Write a Review
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To secure lock plate on an adjustable stock for AR15, M4
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133 Reviews

  • 5
    Castle Nut.

    Posted by Shane McNie on Aug 17th 2020

    It wasn't the prettiest castle nut. It wasn't the fastest castle nut. It didn't have the best luck with the lady nuts, but through sheer determination and persistence, this castle nut matured and became the most adequate means of attaching a receiver extension to a lower receiver. No complaints.

  • 5
    Castle nut for BCM lower

    Posted by Miguel Ortiz on Aug 12th 2020

    BCM makes great quality products, I experienced this when replacing the SBA3 brace on my BCM lower. First, their stake job was by far the best I have come across; the only way I could remove that castle nut was by cutting it off. Purchased another castle nut from BCM, great quality and fast shipping. I also purchased the BCM qd endplate and was easy to stake. Love BCM products.

  • 5
    Excellent quality part

    Posted by Phil Dunn on Aug 9th 2020

    Great fit, worked well

  • 5
    great quality

    Posted by calvin Fossitt on Jul 19th 2020

    i ordered 2 one for my 300blk out build and other to lock down the pistol brace on my kriss vector. the item had a great finish no burns in the threads. what more could you want in a castle nut

  • 5
    The best, you’re not gonna believe it.

    Posted by Justin M on Jul 19th 2020

    This is, I tell all my friends it is, because it is the, and this is yuge, my saying this, it’s unprecedented, it’s the yugest, it’s the bestest castle nut out there, you’re not gonna believe you’re going to say, “oh my god, this castle nut is amazing” you’re going to tell all your friends. Simply amazing. Amazing. The wonderful people at bravo company are, hands down, amazing. The best. (Fitted for BCM buffer tube on my S&W MP-15 Sport-deux)

  • 5
    castle nut

    Posted by Allen Holtzclaw on Jul 18th 2020

    fit good tightened up just like it should, if I ever need another one I will for sure buy from Bravo Co.

  • 5
    Works as expected

    Posted by Chris on Jul 17th 2020

    Perfect finish. Screwed on to a DD buffer tube perfectly. Very satisfying.

  • 5
    Good product

    Posted by Anonymous on Jul 5th 2020

    Great product and I loved the extra stickers

  • 5
    Castle Nut

    Posted by Neil Williams on Jun 23rd 2020

    Great quality