Luth-AR Carbine Lock Ring (Castle Nut) for AR-15 – Replacement Part (CS-02)

• Carbine lock ring castle nut for AR platform buffer tube assemblies
• Secures buffer tube to lower receiver extension interface
• Compatible with AR-15 AR-10 and similar rifle platforms
• Used with latch plate for proper buffer tube installation
• Essential component for maintaining secure receiver extension fit
• Replacement part for firearm assembly or maintenance tasks

The Luth-AR Castle Nut is a fastening component designed for securing buffer tubes on AR-platform rifles. This castle nut threads onto the receiver extension to lock the buffer tube in place. It is used for assembly or replacement of buffer tube hardware. In standard configurations, the Luth-AR Castle Nut fits AR-15 and similar rifle platforms.

The Luth-AR Castle Nut is categorized under long gun parts and is constructed for compatibility with standard AR buffer tube assemblies. This component works in conjunction with a latch plate to secure the receiver extension. The threaded design ensures proper installation and retention. This model supports standard AR-pattern rifle configurations. In practical use, it is suitable for range use or rifle assembly where buffer tube retention is required.