Monstrum Guardian AO Rifle Scope 1 inch Tube Second Focal Plane Crosshair Reticle Black. The Guardian 3-9x AO is a full-featured scope suitable for hunting target shooting or tactical use the scope comes equipped with: Adjustable 3-9 times magnification for targeting out to 600 yards and beyond. An adjustable objective lens or AO - that allows for sharper focus of the target image elimination of parallax and range estimation. Fully illuminated MOA reticle with MOA hashmarks for ranging information and inline dial controlled brightness adjustments. Precision 1/4 MOA/click windage and elevation adjustments. Anodized aircraft grade 6061 aluminum construction for lightweight and durable performance. An integrated throw lever for smooth and controlled adjustment of the magnification dial. Specifications for Monstrum Guardian 3-9x40mm AO Rifle Scope: Manufacturer: Monstrum Objective Lens Diameter: 40 mm Magnification: 3 - 9 x Reticle: Crosshair Tube Diameter: 1 in Reticle Focal Plane: Second Focal Plane (SFP) Illumination Color: Red Finish: Anodized Field of View Linear: 14.9 ft at 100 yds Eye Relief: 3.5 - 3.8 in Color: Black Weight: 14 oz Adjustment Click Value: 1/4 MOA Length: 14 in Adjustment Type: MOA Parallax: Adjustable Objective Battery Type: CR2032 Lithium Metal Fabric/Material: 6061 Aircraft-Grade Aluminum Focus Range: 500 yds to infinity Lens Material: Glass Battery Life: 50000 hours Weather Resistance: Fog Resistant Water Resistance Level: Waterproof Fogproof: Yes Battery Quantity: 1 Condition: New Attachment Type: Picatinny Mount Type: Picatinny Fit: Rifles Features of Monstrum Guardian 3-9x40mm AO Rifle Scope Scope Range: Close to Mid Range 500+ Yards Warranty: 1 Year Package Contents: Monstrum Guardian 3-9x40mm AO Rifle Scope A set of standard profile scope rings compatible with all Picatinny or Weaver mounting platforms A set of flip up lens covers One CR2032 battery Lens cloth Monstrum SG3940AO-B: Guardian AO Rifle Scope 3-9x40mm 1 inch Tube Second Focal Plane Crosshair Reticle Black