Ruger 10-22 (1150) Semi-AutoThis legendary action is a tried and true Ruger design that ensures consistent, reliable performance. Detachable 10 round rotary magazine features a unique rotor to separate cartridges and provide reliable feeding. Easy to use, prominent magazine release provides smooth, no fuss removal of flush mounted magazine. Cold hammer forged barrel is locked into the receiver by a unique, two screw, V block system. Positive, push button, cross bolt manual