The Tapco TAP22060 Castle Nut Steel Black Anodized AR Platform is a purpose-built AR-15 buffer tube retaining nut designed to deliver a secure, repeatable interface for your receiver extension. Machined from durable steel and finished with a black anodized coating, it is sized to integrate seamlessly with standard AR platform builds while resisting wear from regular installation, removal, and cleaning.

This castle nut is ideal for builders and owners who want a dependable part to anchor their stock assembly for range use, training, or general rifle ownership. Its precise fit helps maintain consistent alignment of the buffer tube and related components, supporting smooth cycling and long-term reliability. Tapco’s attention to detail and proven track record in AR accessories make this castle nut a straightforward upgrade for any AR-15 project.

Key Features:

• Manufacturer: Tapco
• Model: Castle Nut
• Color: Black
• Finish: Anodized
• Material: Steel
• Firearm Fit: AR Platform