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Most Recent Reviews
Castle Nut by JJ, Verified Owner, May 17, 2025
Good item that will work across a variety of applications.
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Gun Model:
AR-15
Color:
Black
Fabric/Material:
Aluminum

Code: 3FS-CAN-ULCN3B-2505

MPN: 2505

UPC: 082652080753

List: $19.99Save 35%
$12.99

Product Info for 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.image

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

Fostech Ultra-Lite Castle Nut Orderable Models

List of Orderable Models

  • Fostech Ultra-Lite Castle Nut, Black, 2505 , MPN: 2505 , UPC: 082652080753 , Code: 3FS-CAN-ULCN3B-2505
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