LBE Unlimited ARSPRG AR Parts Carbine Length Recoil Spring AR-15 Silver
https://www.tandktactical.com/shop/765857617343-lbe-unlimited-arsprg-ar-parts-carbine-length-recoil-spring-ar-15-silver-25923
https://www.tandktactical.com/web/image/product.template/25923/image_1920?unique=26d3468
AR15 Carbine Length Recoil Spring
