This 4-round, .308 Multi-Caliber Genuine Ruger® Factory Magazine is compatible with the Ruger American® Rifle. This polymer flush-fit magazine works with short-action rounds including the .308 Win., 6.5 Creedmoor, 6mm Creedmoor, .243 Win., and 7mm-08 Rem. Genuine Ruger Factory Accessory. Made in the USA.