Arm yourself with the Ruger 10/22 Collector Series Sport .22 LR Semi Automatic Rifle. It is semi automatic with a 10-round capacity. The alloy steel barrel with a satin black finish is 18.5-inches long, and its Altamont American Walnut stock is engraved. The V-block system receiver finishes off the design. Ruger 10/22 Collector Series Sport .22 LR Semi Automatic Rifle - Rifles Rimfire at Academy Sports