• crafted from solid billet aircraft Grade aluminium for a Lightweight yet Durable castle Nut
• fits Mil
• Spec buffer tubes and enhances The form and function of your build
• Made in The USA With type III hardcoat anodize for long
• lasting quality

Upgrade your AR build with the Fortis Mfg Castle Nut in sleek Black Anod! Crafted from a single piece of billet aircraft-grade aluminium, this castle nut is all about shedding weight without compromising on durability. Weighing in at just 0.2 oz, it's the perfect choice for those looking to trim down on ounces without sacrificing strength. Designed to fit mil-spec buffer tubes, this castle nut is a must-have for any AR enthusiast looking to enhance both the form and function of their firearm. Simply grab a standard stock wrench to install this beauty and enjoy the benefits of its Type III Hardcoat Anodize finish. Made in the USA, this castle nut is a top-notch addition to your AR build grab yours today and experience the difference!