2A Armament Builder Series AR-15 Castle Nut

2A Armament is a line of AR-15 parts and accessories known as the Builders Series. The Builders Series was developed after receiving feedback from the shooting community and were designed to support individuals who thrive on building new upper’s or firearms. This castle nut is made from 6061 Aluminum and features a Type III Class 2 Hard Coat anodized finish. Most importantly the castle nut is lightweight and strong allowing you to lower the weight and increase the aesthetics of just about any build.