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Primary Weapons Systems EBT Mod 2 End Plate and Castle Nut
$49.95 $39.99 Save 20%
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Most Helpful Positive Review Pws end plate and castle nut
I used this to assemble an sb tactical sb3 kit to an aero m4e1 lower. Everything assembled nicely. I like idea of haveing an alternative to staking the castle nut and being able to easily undo if desired. I have not run the firearm yet.
Most Helpful Negative Review Quality control definitely lacking
I purchased three of these a few years ago, and they seemed to work fine under minimal use. However, I purchased four within the last month and they are definitely lacking in quality control when compared to those first three. The end plate key/tab doesn't properly engage the channel of a mil-spec...
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PWS Ratchet Castle Nut & End Plate

by johnchip, Verified Owner from CT, United States Written on August 3, 2025
I have used the PWS ratchet castle nut and endplate on 10 by builds. I use to stake all my castle nuts but this system is better for my needs. I've never had any back out on me and they are super easy to install. Also easy to remove when needed. Some people say they back out and that it isn't good to reuse them as the detent will wear down but I've never had anything like that happen over the past two years of using them. If you don't want to be bothered with staking the castle nut or or this is your first build then I highly recommend this product.
Would recommend: Yes
Was it helpful to you? Yes | No

PWS Ratchet Castle Nut & End Plate

by johnchip, Verified Owner from CT, United States Written on August 3, 2025
I have used the PWS ratchet castle nut and endplate on 10 by builds. I use to stake all my castle nuts but this system is better for my needs. I've never had any back out on me and they are super easy to install. Also easy to remove when needed. Some people say they back out and that it isn't good to reuse them as the detent will wear down but I've never had anything like that happen over the past two years of using them. If you don't want to be bothered with staking the castle nut or or this is your first build then I highly recommend this product.
Would recommend: Yes
Was it helpful to you? Yes | No

Excellent upgrade to a critical component

by GreyKnight, Verified Owner from NV, United States Written on July 14, 2025
I'm guessing i'm not the only one who has had a castle nut wrench slip and chew up the nut / scratch a buffer tube... this is the solution!
As a bonus it makes changing the buffer tube much easier and cleaner than having to stake and re-stake a castle nut.
Easy to use, looks great, work even better. Only problem is the p[rice is kind of ridiculous for a castle nut and end plate.
Pros:
  • Fit and Function
Cons:
  • Price $$$
Would recommend: Yes
Was it helpful to you? Yes | No

castle nut without staking

by John J, Verified Owner from NM, United States Written on June 16, 2025
This setup is a little pricy but well worth the opportunity to skip staking the castle nut.
Perhaps I haven't done it enough or maybe my vise isn't all that great but I have found stake a castle nut a chore the lower always seems to shift a little in the vise.
This combination might be $30 more than the simple castle nut and endplate but it's worth it to me, plus at is much easier to change out if you want to.
Pros:
  • no staking required
Cons:
  • None
Best Used for:
  • ocasional builders
Would recommend: Yes
Was it helpful to you? Yes | No

Best endplate/ castle nut solution on the market

by Ringinthesteel, Verified Owner from TX, United States Written on April 6, 2025
These PWS ratcheting castle nuts are awesome. No need to stake and they don’t back out. I love them and put them on all my builds.
Would recommend: Yes
Was it helpful to you? Yes | No

OMG how did i miss these!!

by ArchAngelImperial99, Verified Owner from NJ, United States Written on April 3, 2025
I have no idea how i missed these in the past but I’m glad i have them how. Super impressed with how they securely lock up and are slim enough to not add extra space. Definitely my standard now. A must have.
Would recommend: Yes
Was it helpful to you? Yes | No

Don't have to stake

by TS, Verified Owner from TX, United States Written on March 30, 2025
It's nice to not have to stake the castle nut down with the plate and having the qd point is nice too
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect for builders and parts changers

by Rob85k5, Verified Owner from FL, United States Written on March 13, 2025
I prefer this endplate and castle nut as there is no need to stake it in place. This systems stays put everytime on several different setups. Easy to change out if needed or changing buffer tubes.
Pros:
  • Ease of use
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

PWS End Plate & Castle Nut

by Michael Kelly, Verified Owner from ID, United States Written on January 6, 2025
The PWS end plate and castle nut are my go to on all my builds now. Easy on and off with the ratcheting system, very nice. No staking necessary.
Pros:
  • None
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

great product

by logielog94, Verified Owner from AL, United States Written on November 26, 2024
This came packaged well and was easy to install holds up much better than the original Mil-spec.
Pros:
  • Ease of installation
Cons:
  • None
Best Used for:
  • AR15
Would recommend: Yes
Was it helpful to you? Yes | No
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