Hatsan Torpedo 155 Vortex Spring Piston Air Rifle - Turkish Walnut Dual Safety: Manual and automatic cocking safeties SAS: Proprietary Shock Absorber System for reduced vibration and increased gun, optics, and accessory life Quattro Trigger: This 2-stage, fully adjustable match trigger is only available from Hatsan Accessory Rail: Rail with scope stop that accepts 11mm and 22mm scope mounts