Fortis Manufacturing

The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If you're trying to save ounces, this is a great way, but without sacrificing durability. The castle nut will fit onto mil-spec buffer tubes and quickly upgrade the form and function of your build.

Features:

• Material: Aircraft Grade 7075-T6 Aluminum
• Weight: 5.5g
• You will need a standard stock wrench to install
• Type III Hardcoat Anodize
• Made in the USA!

By ordering United Survival First Aid Kits (Medical Kits) or other products, you warrant that you have received the proper training and required authorization, if applicable, to use said medical products. United Survival assumes no liability for the misuse of any product or kit. You must know and understand your local/ state laws.

United Survival reserves the right to replace/switch any product with one of equal quality or value at any time at our discretion.

Descriptions on this website (unitedsurvivalstore.com) or any affiliate website are intended only to describe the products, and should not be construed as medical advice. Consult your healthcare provider for any and all medical advice.

WARNING: Cancer and Reproductive Harm

http://www.P65Warnings.ca.gov

We do not ship firearm parts to the following states. If you place an order for firearm parts to be shipped to these states, your order will be canceled and you will be charged a 15% restocking fee. We apologize for the inconvenience of these states' communism. 

• Colorado
• Delaware
• Massachusetts
• Washington D.C
• Hawaii
• Puerto Rico
• Alaska
• Connecticut 
• Illinois 
• Maryland
• New Jersey 
• New York
• Washington