Carbine that converts to a pistol  Gas-piston  Breakbarrel  58 lbs. cocking effort  TruGlo fiber optic front sight adjustable for elevation  TruGlo fiber optic rear sight adjustable for windage & elevation  Quattro 2-stage adjustable match trigger  Anti-beartrap mechanism  Ergonomically designed synthetic stock  Textured grips with finger grooves and thumbrest (RH grip)  Telescoping stock: 26" to 29.9" long  Manual/automatic safety  11mm optics dovetail grooves  Muzzle cap can be replaced by included aluminum cocking aid (both screw on)   
        
          
 Here are the benefits of a gas-piston over a spring-piston powerplant: