Nikko Stirling Mountmaster AO 1in Tube Rifle Scope Second Focal Plane HMD Reticle 1/4 MOA Matte Black. Specifications for Nikko Stirling Mountmaster 3-9x40 AO 1in Tube Rifle Scope Second Focal Plane: Manufacturer: Nikko Stirling Objective Lens Diameter: 40 mm Magnification: 3 - 9 x Reticle: 1/4 MOA Tube Diameter: 1 in Reticle Focal Plane: Second Focal Plane (SFP) Exit Pupil: 4.4 - 13.3 mm Finish: Matte Field of View Linear: 4 - 11.9 m at 100 m Eye Relief: 3.3 in Color: Black Weight: 380 g Adjustment Click Value: 1/4 MOA Length: 12.7 in Adjustment Type: MOA Parallax: 10 yds to infinity Illumination Type: LED Adjustment Range: 30 MOA Lens Material: Glass Optical Coating: Multi-Coated Weather Resistance: Yes Water Resistance Level: Waterproof Shockproof: Yes Fogproof: Yes Magnification Type: Variable Condition: New Mount Type: Weaver Features of Nikko Stirling Mountmaster 3-9x40 AO 1in Tube Rifle Scope Second Focal Plane Supplied with 3/8'' mount 1 inch matte black alloy body tube AO models feature parallax adjustment on bell 10yds to infinity IR models Waterproof Shock Proof Nitrogen Filled Multicoated Lenses Package Contents: Nikko Stirling Mountmaster 3-9x40 AO 1in Tube Rifle Scope Second Focal Plane Lens Cover Lens Cloth Manual Nikko Stirling NMM3940AON: Mountmaster 3-9x40 AO 1in Tube Rifle Scope Second Focal Plane HMD Reticle 1/4 MOA Matte Black