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Primary Weapons Systems PWS Enhanced Buffer Tube, Mil-Spec Gen 2 Ratchet Lock Endplate
$109.95 $99.95 Save $10.00
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Expert Review

Got 1, Want More

by Matt S., Gear Expert from IL, United States Written on January 27, 2017
I wanted to try the ratcheting castle nut/end plate design so just ordered the kit with buffer tube.

Really glad I did. All components are excellent. Well made, solid finish, easy to install.

The buffer tube is "engraved" stamped with the various positions, lightweight design and the fluting just looks nice. Anti-tilt design seats the buffer tube lip around the buffer retaining pin.

Not having to stake a castle nut is awesome. Ratchets onto the end plate and can be removed if necessary.

Still uses the same castle nut wrench, no special/proprietary tools needed.

The QD sling swivel socket in the rear is great and very useful as it allows both lefties and righties to use a sling there without any reconfiguring or having "extra" snag points.

I put mine on a CWAR build I have been working on, using the Kaiser US polymer receiver set.

Love it. Plan to get the same kit for any other future builds I do, which is at least 2 more right now.

Even if you don't want/get their buffer tube, the ratcheting endplate/castle nut can be bought separately and used with any mil spec receiver/buffer tube setup.

Pricey but I think it is well worth it for a quality product with thoughtful, innovative design.
Most Helpful Positive Review Great addition
If you’re looking for something different that not everyone has, look no further. First time trying pws products and couldn’t be happier. Very light and streamlined, a great addition to my newest build. Love opticsplanet, great service and products.
Most Helpful Negative Review Good not GREAT
I purchased this set primarily for the lightweight buffer tube. It is amongst the lightest available at 3.1oz without using carbon fiber. The tube itself is well constructed with excellent threads and decent anodizing. Now for the cost, I wouldn't exactly go this route but as mentioned this is go...
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pes reciver buffer tube

by vap, Verified Owner from MT, United States Written on July 31, 2025
Fantastic design. Beautiful craftsmanship. Ratcheting system is very nice, don’t have to worry about stacking.
Would recommend: Yes
Was it helpful to you? Yes | No

Will buy another for the next build!

by someone, Verified Owner from OH, United States Written on May 22, 2025
If you are tired of staking your castle nut, or being worried about your buffer tube alignment or loosening - this is the buffer tube for you!

This thing locks up solid as a rock when you ratchet the castle nut down!
Would recommend: Yes
Was it helpful to you? Yes | No

most solid buffer assembly

by Joe, Verified Owner from NH, United States Written on April 29, 2025
Most secure buffer assembly that I have used. The end plate has a great qd slot and the ratcheting castle nut was easy to install and works better than staking a mil-spec castlenut
Pros:
  • Price
  • easy installation
  • Quality of materials
  • Lock up
Cons:
  • finish is easily marred
Best Used for:
  • AR 15
  • AR 10
  • PCC
Would recommend: Yes
Was it helpful to you? Yes | No

SO SIMPLE its not fair lol

by Paul, Verified Owner from MO, United States Written on April 11, 2025
This worked so well on my last build I decided to use it on my PWS mk109 mod2 build. No need to stake this bad boy the ratcheting mechanism does all the work for a super solid lockup. Shipped fast and arrived as advertised. HIGHLY recommend it!
Pros:
  • Easy to install
  • Solid lockup
  • no special tools needed
Cons:
  • None
Best Used for:
  • AR15 builds
Would recommend: Yes
Was it helpful to you? Yes | No

Quality as expected

by Gary T, Verified Owner from OH, United States Written on March 16, 2025
First time using the gen2, used the gen1 a lot with builds.
Solid and tight lock up and great build quality. QD swivel is out the rear compared to the old models but it is still functional for my use.
Would recommend: Yes
Was it helpful to you? Yes | No

Enhanced everything!

by Gunna, Verified Owner from TN, United States Written on February 27, 2025
East to install as the ratchet castle nut makes for a easy install or disassembly. Color is perfect and durable . I love the cut outs on the tube . Recommend highly
Would recommend: Yes
Was it helpful to you? Yes | No

best buffer tube ive purched

by Kelly Hegar, Verified Owner from OR, United States Written on February 19, 2025
This buffer tube is an absolute beauty. Paired it with a bmc build and wow. Optics planet is my go to parts and cool stuff place. Outstanding customer service and free shipping on certain items is second to none.
Would recommend: Yes
Was it helpful to you? Yes | No

Repair of AR

by RLM, Verified Owner from FL, United States Written on February 19, 2025
The parts were available and shipped very quickly. Items were as described and worked perfectly.
Pros:
  • Item worked perfectly
Cons:
  • None
Best Used for:
  • Buffer tube upgrade
Would recommend: Yes
Was it helpful to you? Yes | No

Great Tube, Fit and Finish

by Prospector, Verified Owner from FL, United States Written on February 15, 2025
Fast shipping,so we could get out customer going again, had been on backorder from other vendors.
Very easy to install, following the instructions as other reviewers had said.
Well packaged to prevent possible shipping damages, Happy custoemr,, Thank you.
Pros:
  • Easy install. Good fit.
Cons:
  • None especially at price point
Best Used for:
  • adjutable stock
Would recommend: Yes
Was it helpful to you? Yes | No

Among the best

by Josh, Verified Owner from ME, United States Written on February 7, 2025
This is the second PWS ratchet lock buffer I have purchased. These are quality made and stay tight. Fit and finish is spot on and they look great.
Pros:
  • None
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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