• Made from grade 5 titanium
  • Compatible with both AR-15 and AR-10 style rifles
  • Works with all Mil-Spec buffer tubes
  • Half the weight of standard steel castle nut
  • Designed and Manufactured in U.S.A.


  • Material: Grade 5 Titanium
  • Finish: BlackDiamond (DLC), Raw Titanium, C4V (TiN), and Copperhead
  • Weight: 0.32 oz.
  • Thickness: 0.376"


  • AR-15 and AR-10


When you get into the meat of a new build you have decisions to make. There are a lot of factors that drive the choices you make. One compromise you don’t want to make it in the choice of your castle nut. Even when you want to create a lightweight build, you can’t compromise strength. What you want is the perfect blend of reduced weight and strength provided by the Iron City Rifle Works Titanium Castle Nut.

Iron City Stands Behind Their Products

Iron City machines their titanium castle nuts from grade 5 titanium, perfect to provide the quality strength you need and the reduced mass you want. They proudly back the work of their American craftsmen with a lifetime warranty, so you can be confident in your choice. Go ahead, build it. It will do the job.

Iron City and Wing Tactical Better for You, Better for Your Build

When you buy an Iron City Titanium Castle Nut from Wing Tactical, you don’t just get a great product, you get outstanding customer service and great value. Wing Tactical is proud to bring our customers some of the best parts on the small arms market. We only work with companies like Iron City Rifle Works who bring to market quality, innovative products that give you an edge. Our customer service representatives are gun owners just like you, and they know every product we offer. If you have a question about anything, before or after the sale, we have the answers you need.

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