Ruger Magazine American Rifle Short Action 4-rounds Black. 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 Specifications for Ruger Magazine American Rifle Short Action 4-rounds Black: Manufacturer: Ruger Color: Black Finish: Matte Fabric/Material: Polymer Magazine Capacity: 4 Round Caliber: .308 Winchester Gun Model: Ruger American Rifle Quantity: 1 Condition: New Dimensions: 1.55 X 3.55 X 6.75 in Package Contents: Ruger Magazine American Rifle Short Action 4-rounds Black What firearm models does the manufacturer say Ruger Magazine American Rifle Short Action 4-rounds Black is compatible with? The manufacturer says that Ruger Magazine American Rifle Short Action 4-rounds Black is compatible with Ruger American RifleRuger Magazine American Rifle Short Action 4-rounds Black