The Luth-AR 308 Carbine Buffer Spring is purpose built for AR-10 pattern rifles running .308 Winchester or 7.62 NATO in a carbine-length receiver extension. Made from tempered spring steel with carefully controlled coil count and length, it is designed to deliver consistent tension and smooth cycling in modern .308 AR builds.

This carbine buffer spring is ideal for builders and owners who want reliable function in collapsible-stock AR-10 configurations without adding unnecessary complexity. Its precise manufacturing and durable construction make it well suited for range use, training, and general-purpose rifle setups where dependable performance matters. Luth-AR’s reputation for well engineered AR components shows through in this simple but critical part.

Key Features:

• Manufacturer: Luth-AR
• Model: 308 Carbine Buffer Spring (308-CS-10A)
• Caliber: .308 Winchester / 7.62 NATO
• Type: AR-10 Carbine Buffer Spring
• Material: Tempered Spring Steel
• Compatibility: AR-10 rifles with carbine receiver extension
• Coils: Approximately 24–25 coils
• Length: 9.75 inches