Fortis Standard AR-15 Castle Nut
or 4 interest-free payments of $2.84 with
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
Frequently bought together
From orders that included this itemProduct description
Lightweight Aluminum Castle Nut
Only a third of the weight of a mil-spec steel castle nut, the Fortis Standard Castle nut offers a simple way to trim fat from your AR-15 build. This 7076-T6 aluminum ring features standard cuts for an AR-15 multitool, and is installed the same way a regular nut is. The smaller cuts provide the perfect recess to stake your endplate into the castle nut, preventing rotation.
This part makes saving ounces on a lightweight build simple, without sacrificing the durability overall. The higher grade of aluminum means it will work as an excellent retainer to keep your receiver endplate and buffer tube secure.
Specifications
- Material: 7075-T6 Aluminum
- Finish: Type III Hardcoat Anodized
- Weight: 0.2 oz
Customer reviews 2
AT3 Tactical · Thank you for your review and for choosing our Fortis Standard AR-15 Castle Nut. We are glad to hear that it added a nice touch to your build and that you were pleased with its appearance and lightweight design. We also appreciate your recommendation and are happy to know that it performed as advertised. Thank you for the helpful tip on using 3M painters tape to prevent scratches. We value your feedback and hope to continue providing quality products for your builds.
AT3 Tactical · Thanks for sharing your feedback! We're glad you're satisfied with your purchase.
Questions & Answers
No questions yet. Ask about fit, install or compatibility and our team answers within a business day.
Warranty & returns
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.















