UTG 3x Magnifier w Flip to Side QD Mount W E Adjustable Barrel Backs Fronts Inserts Adapters 12” SINGLE PIECE BARREL 2264502 12” SINGLE PIECE BARREL internally the Etha is a radical departure from anything seen before in an Eclipse marker • 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