Optisan ES 3-12X44i




Design for precision shooters

Designed and engineered for sub-MOA precision shooting. The ES line shares the same optical system and the machining/assembly tolerance that can provide high resolution at high power, maintaining a generous eye box for shooters while holding up to 6000j post-barrel muzzle velocity.

Stainless steel capped turret

The ES riflescope features a stainless steel capped turret, which produces a distinct and audible clicking sound, providing positive feedback to the shooter. It has a toolless reset-to-zero design, and the cap protects the turret from the elements during outdoor use.

The ES scope is available in MIL/MIL (10 MIL per turn) matching turret/reticle configuration. Additionally, it comes equipped with the latest MHP mil-hash reticle, which has been specifically designed to minimize obstruction of the shooter’s view and provide long-range holdover capabilities.

Springer Rated

ES line has undergone extensive testing by champion shooters for over a year, using a springer rifle. It has proven to be durable and reliable, making it suitable for use with centerfire rifles as well.

What comes in the box:

3” sunshade, Lens covers.




Magnification (High): 12X

Magnification (Low): 3X

Objective Diameter (mm): 44mm

Outer dia. Objective (mm): 52mm

FOV (min.mag - max.mag) (ft@100yds): 36.7ft - 9.2ft

FOV (min.mag - max.mag) (m@100m): 12.23m - 3.06m

FOV (min.mag - max.mag) (degree): 6.97° - 1.76°

Eye relief (min.mag - max.mag) (in): 3.8'' - 3.5''

Eye relief (min.mag - max.mag) (mm): 96.52mm - 88.9mm

Exit Pupil (min.mag - max.mag) (mm): 14.7mm - 4mm

Diopter Range (dpt): +/- 2.0 dpt

Parallax Adjustment: 10 yds - infinity

Coating: Fully multi-coated


Tube Construction: One-piece tube, aircraft aluminum

Elevation Adjustment (value per click): 0.1 MRAD

Windage Adjustment (value per click): 0.1 MRAD

Turret Style (Elevation): Low profile, toolless resettable zero

Turret Style (Windage): Low profile, toolless resettable zero

Travel Per Rotation: 10 MRAD

Elevation adj. range: ≥ 18 MRAD

Windage adj. range: ≥ 18 MRAD

Eye Piece Diameter (in): 1.73''

Eye Piece Diameter (mm): 44mm

Eye Piece Length (in): 3.70''

Eye Piece Length (mm): 94.0mm

Mounting Length rear (mm): 57.6mm

Mounting Length front (mm): 49.5mm

Tube Dia. (mm): 30mm

Length (in): 12.91''

Length (mm): 328mm

Weight (g): 670g

Weight (oz): 23.63oz

Surface Finish: Matte Black


Functional temperature: -20 ~ 50 degree celcius

Storage temperature: -20 ~ 50 degree celcius

Submersion tightness: IPX7


Reticle: MRAD-MHP10i

Calibrated Ranging Power: 10X

Focal plane: Second Focal Plane

Illumination: 6 Steps illumination with off setting in between


Standard Accessories

3" sunshade, lens covers






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