Description\nM5 .308 carbine buffer spring for use in .308 AR's. Perfect for your new build or as a direct replacement for worn out parts. Made in the USA.\n\nProduct Specifications\n\n- Buttstock Fit: Carbine\n- Make Model Fit: AR-308.Universal\n- Quantity: 1\n- Color: Stainless Steel\n- Material: Steel