AR-15 Castle Nut
- Make: ATI
- Model: Castle nut
- Action: Bolt Action
- Price: $21 AUD
- Location: NSW
- Listed on: abelasgunshop.com.au
- Dealer: Abela's Gun Shop
This ATI Castle Nut is a high-quality, precision-engineered replacement part for Bolt Action Chassis Buffer Tubes. The castle nut is made in the United States from high-quality, e-coated steel, giving it long-lasting durability and wear resistance. Fits both Mil-Spec and Commercial carbine buffer tubes