Action Army AAP 01 "Assassin" Airsoft Gas Blowback Pistol Playing Gear • Broadband Multi coated Lens to Pods • Broadband Multi coated Lens to Provide Crystal Clear 3X Image• Wide Field of View 30% Bigger Than Comparable Models from Other Brands• Windage Elevation Adjustability for Optimum View Centering• Innovative Flip to Side Mechanism for Quick Transition between 1X and 3X Image• Adjustable Eyepiece for Easy Dioptric Correction• Precision Machining and Anodizing for Maximum Strength and Wear Resistance• Patented Quick detach Lever Lock Mounting Base• 42mm Center Height for Most Common Dot Sight Combination• Completely Sealed and Nitrogen Filled for Fog Weather Proof Now you can shoot like a pro on your way to becoming one great for both target plinking and use in Airsoft skirmishes the AAP 01 is capable of both semi auto and full auto firing modes by flipping the fire selector on the underside of the bolt carrier