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Luth-AR Carbine Lock Ring/Castle Nut CS-02 Additional Features: MBA-3 & 4, Includes Coupon Available

Luth-AR Lock Ring/Castle Nut, Carbine, MBA-3 & 4 Car Buff Kits Only CS-02
Luth-AR Lock Ring/Castle Nut, Carbine, MBA-3 & 4 Car Buff Kits Only CS-02
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Luth-AR Lock Ring/Castle Nut, Carbine, MBA-3 & 4 Car Buff Kits Only CS-02

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Questions & Answers
Where is this part made? Expert Answer

No country of origin is listed for this part.

Mark H.

by Mark H., Gear Expert, December 18, 2018
See 1 More Answer
commercial or milspec fitment? Expert Answer

It will fit either.

by Todd, Gear Expert, September 15, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews
It's a castle nut! by Rick, Verified Owner, February 13, 2025
It will make your setup shoot MOA all day. Just kidding. It's a simple part, but it fits well and it's a great price. Threaded up perfectly to my American Def. Mfg tube.
Most Recent Reviews
Awesome product by Gabe Smith, Verified Owner, October 24, 2023
Awesome product, works as it should. Will buy again
Most Recent Reviews
Steel, fits commercial-spec by Dan, Verified Owner, June 22, 2021
Threads easily onto the LUTH-AR Commercial-Spec buffer-tube/receiver extension (wasn't sure it would because nothing is listed anywhere saying that fits one spec or the other specifically) that I also purchased. Sharp, clean threads and steel what mo...
Read More...
Most Recent Reviews
It's a castle nut by HasH, March 4, 2021
The black finish matched my built quite nicely and it works as a castle nut should without a problem at all. So, no complaints from me and I'm sure I'll end up buying more if needed. Thanks OpticsPlant
Read All 4 Reviews

Deal #3: Up to 15% OFF Firearm Parts

See promotion details.
Eligible models will have a savings offer. Apply coupon and add the item to your cart for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Additional Features: MBA-3 & 4 Gun Model: AR-10 , AR-15 Color: Black Fabric/Material: 4140 Steel

Code: 3FN-CAN-29LUTH-CS-02

MPN: CS-02

UPC: 859819007201

12%
Product Discount
List: $5.05
$4.99

Product Info for Luth-AR Carbine Lock Ring/Castle Nut

Specs:image

Threaded Steel ring used to retain the carbine buffer tube to the lower receiver

Finish:

Maganese Phoshate

SKU: CS-02

Specifications for Luth-AR Carbine Lock Ring/Castle Nut:

Manufacturer: Luth-AR
Additional Features: MBA-3 & 4
Gun Model: AR-10, AR-15
Color: Black
Fabric/Material: 4140 Steel
Gun Type: Carbine
Finish: Maganese Phoshate
Gun Make: AR Platform
Weight: 0.5 oz

Features of Luth-AR Carbine Lock Ring/Castle Nut

  • Threaded Steel ring used to retain the carbine buffer tube to the lower receiver

Package Contents:

  • Luth-AR Carbine Lock Ring/Castle Nut

What firearm models does the manufacturer say Luth-AR Carbine Lock Ring/Castle Nut is compatible with?

The manufacturer says that Luth-AR Carbine Lock Ring/Castle Nut is compatible with AR-15, AR-10

Luth-AR Carbine Lock Ring/Castle Nut Orderable Models

List of Orderable Models

  • Luth-AR Lock Ring/Castle Nut, Carbine, MBA-3 & 4 Car Buff Kits Only, Black, CS-02 , MPN: CS-02 , UPC: 859819007201 , Code: 3FN-CAN-29LUTH-CS-02
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