The Luth-AR 223 Rifle Buffer Spring is a dedicated A2 rifle-length spring engineered to keep your AR-15 cycling smoothly shot after shot. Built with tempered steel and precise coil spacing, this drop-in replacement maintains consistent tension on the bolt carrier for dependable function with .223 and 5.56 NATO rifles using a rifle-length receiver extension.

This buffer spring is ideal for shooters who want a reliable, no-nonsense upgrade or replacement for a standard AR-15 rifle system. Whether you are tuning a new build or refreshing a well-used rifle, its durable construction supports smooth recoil management and consistent return-to-battery performance during range sessions, training, or general recreational shooting. Luth-AR’s focus on quality components and careful manufacturing helps ensure long service life and dependable operation.

Key Features:

• Manufacturer: Luth-AR
• Model: BS-10B Rifle Buffer Spring
• Caliber: .223 / 5.56 NATO
• Firearm Fit: AR-15 with A2 rifle-length receiver extension
• Construction: Tempered steel with precise coil spacing
• Length: Approximately 13 inches