Ruger 10/22 Carbine, Semi-automatic Rifle, 22 LR, 18.5 Barrel, Factory Installed Scope Base Adapter, Satin Finish, Black, 10 Round, 1 Magazine 31210 Ruger is excited to announce a limited availability 10/22 Carbine. This affordable new 10/22 features a factory-installed combination scope base adaptor and is available with a black stock. As with all Ruger 10/22 models, this new configuration boasts the tried-and-true legendary action that ensures consistent, reliable performance. Each rifle ships with one detachable, 10-round rotary magazine featuring a unique rotor to separate cartridges and provide reliable feeding.