PWS Ratchet Lock Castle Nut and Endplate Set

(11 reviews) Write a Review
0.20 LBS
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Frequently bought together:


The Ratchet Lock Castle Nut End Plate set works with mil-spec OR commercial buffer tubes and eliminates the need for staking. A quick upgrade to any rifle build, the Ratchet Lock Castle Nut End Plate features a QD mount and easy installation with any buffer tube.


The patent pending Ratchet-Lock Design eliminates the need for staking the castle nut and gives a rock solid lock up while being able to remove it easily if needed in the future.


The central QD sling swivel mount allows for neutral positioning of your firearm with multiple sling configurations.

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
We reserve the right to fix any critical errors.

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Additional Information

Product ID:
Gun Sling Adapters
Made In USA
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11 Reviews

  • 5

    Posted by Unknown on 22nd Sep 2020

    Very easy to install, great alternative to staking castle nut. Feels sturdy.

  • 5
    PWS endplate ratchet system

    Posted by Average Joe on 22nd Sep 2020

    Easy install less bulky than the other quick detach systems .so far I have fired 500 rounds through the rifle after installing it and has not come loose

  • 5
    Top notch castle nut and back plate

    Posted by Manny Martinez on 2nd Sep 2020

    This item is very well designed, it is quality crafted and has excellent functionality. Definitely better than other castle nuts and back plates I have used and definitely much better than I actually expected!

  • 5
    Awesome product awesome service

    Posted by R. L. on 1st Sep 2020

    I ordered this thinking it might be delayed given the current state of gun parts. Nope it arrived quicker than most of what I ordered. Way to go Botaxh. Also, love the product. Third build I've done and the second time I've used this. It's not that much more expensive and its a time and headache saver

  • 5
    Quality stuff

    Posted by Israel on 22nd Aug 2020

    Way better and easier than staking your castle nut.

  • 5
    Fantastic device

    Posted by NateB on 19th Jul 2020

    This thing is super nice and really makes mounting the castle nut super easy. I’ll probwbly only use these for any new builds I do going forward.

  • 5
    Great product

    Posted by Russ Hancock on 16th Jun 2020

    I bought three. The service was excellent and my ratcheting castle nuts arrived early

  • 5
    PWS Rachet Castle Nut AR

    Posted by Trev on 13th Apr 2020

    I only use these on all my builds.... Steel QD and the ratchet is VERY STRONG

  • 4
    Good product, but...

    Posted by That Guy on 18th Feb 2020

    It's a great product, but it came in a plastic bag with no instructions or information about the lifetime guarantee Primary Weapons Systems offers on this product. I contacted customer service and got a response back saying they order them in bulk, so there is no retail packaging available and gave me a link to a Brownells video showing how to install it.

  • 5
    PWS Ratchet Castle Nut & Endplate

    Posted by Hunter on 10th Dec 2019

    Exactly what I was looking for. I like to stake all my builds but a buddy recommended checking out PWS' system and so I did. Now I don't have to replace my endplate or castle nut if and when I want to replace my whole buffer system. Very easy to use obviously swapped them out in 5 minutes on 2 rifles clicked them a few clicks tighter than hand tight and it won't budge without a wrench.

  • 5
    Great part

    Posted by Tim Harvey on 18th Aug 2019

    I wish I had used these on all my builds. I will be buying more. Easy installation

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