The Daniel Defense Castle Nut Black is engineered with precision to secure your mil spec or commercial spec carbine receiver extension and rear receiver end plate to the lower receiver. Its design includes recesses for staking to prevent loosening, and it is finished with a heavy magnesium phosphate coating for durability. Compatible with common armorers/castle nut wrenches, this accessory ensures reliable performance.

Ideal for range time, training, and enhancing your firearm setup, the Daniel Defense Castle Nut Black stands out for its robust construction and ease of use. Daniel Defense is renowned for innovation and quality in firearm accessories.

Key Features:
- Manufacturer: Daniel Defense
- Model: Castle Nut Black
- Product Type: Buffer and Buffer Parts
- Material: Steel
- Unique Features: Recesses for staking, heavy magnesium phosphate coating
- Weight: 0.5 oz