Fostech Ultra-Lite Castle Nut

Make your next build LITE by using a Fostech Ultra-Light Castle Nut. Fostech machined these AR15 Lower Parts from their proprietary lightweight material. Swapping in this Fostech 2505 Lightweight Castle Nut will reduce your build by 0.34oz compared to a standard castle nut. Save weight and keep the strength with the Fostech Ultra-Light Castle Nut. Specifications for Fostech Ultra-Lite Castle Nut: Manufacturer: Fostech Gun Model: AR-15 Color: Black Fabric/Material: Aluminum Features of Fostech Ultra-Lite Castle Nut Lightweight Machined Staking Notches Package Contents: Fostech Ultra-Lite Castle Nut