Barska 3-12x40 AO Airgun Reverse Recoil Rifle Scope w/ Mil-Dot Reticle | BAR-AC10008 The 3-12x40 AO Airgun Riflescope from Barska is constructed to withstand the additional reverse recoil produced by airguns. The AO Airgun Riflescope features an adjustable objective (AO) to adjust for multi-range parallax error. The AO allows the scope to deliver continuous accuracy and precision. There are fully coated optics and a ranging Mil-Dot reticle. The 1" tube comes with scope caps. It is waterproof, fogproof and shockproof. This scope is ideal for competition and recreational shooting. Includes Scope caps Lens Cloth Features 3-12x Magnification 40mm Objective Lens 1" Tube Mil-Dot Reticle Fully Coated Optics Adjustable Objective Reverse Recoil Technology Waterproof, Fogproof and Shockproof Manufacturer's Warranty Limited Lifetime Warranty Technical Specifications Brand: Barska Series: Air Gun Model Number: AC10008 UPC: 790272802135 Magnification (Zoom): 3x-12x Objective Lens: 40mm Tube Diameter: 1 in Eye Relief: 4.2 in Exit Pupil: 13.3mm - 3.3mm Click Value: 1/4 MOA Field of View(ft@100yds / m@100m): 35 /11.6 @ 3x , 9 / 3 @ 12x Reticle: Mil-Dot Reticle Illumination: None Reticle Color: Black Turret Style: Capped Focal Plane: Second Optical Coating: Fully Coated Parallax Adjustment: Objective Waterproof: Yes Fogproof: Yes Adjustment Knob: Parallax adj. windage and elevation Product Weight: 18.1 oz Length: 13.66 in Finish: Black Matte