Luth-ar 308-BS-10B Buffer Spring 308/7.62mm
https://www.tandktactical.com/shop/859819007263-luth-ar-308-bs-10b-buffer-spring-308-7-62mm-58702
https://www.tandktactical.com/web/image/product.template/58702/image_1920?unique=cb25bbd
Tempered steel spring has proper tension for reliable cycling of AR-style rifles chambered in .308/7.62mm. 38 Coils
