U.S. Optics 5-25x52 B-25 34mm Riflescope

U.S. Optics 5-25x52 B-25 34mm Riflescope

Matte, IGR, EREK 2 1/4 IPHY Elv, US#5 1/4 IPHY Win

Stock# USOB25IGR UPC 811069021024
U.S. Optics


  • Matte Black Type III Hard Anodizing
  • Illuminated IGR (Red)
  • 34mm
  • EREK 2 1/4 IPHY Elevation Knob
  • US#5 1/4 IPHY Windage Knob
  • Side Focus
  • Rapid Focus Eyepiece
  • First Focal Plane


The new B-Series of optics are the most feature packed optics on the market. While the B-25 retains the the popular 5-25x magnification range today’s professionals are asking for, the similarities stop there. These new optics now have locking elevation and windage knobs, zero stop, revolution counter, tool-less elevation zero and a single button illumination control which has been integrated into the parallax adjustment knob. All this and still the same durability, reliability and performance U.S. Optics is known for.

IGR: Designed by U.S. Optics’ GM, this MOA based reticle offers 1 MOA out to 10 MOA marks. The open center features a red dot in order to provide a clear view of the shooter’s groupings, while the fine cross hairs present a clear and crisp image without obscuring the target. The IGR provides 30 MOA on upper and 60 MOA on lower vertical axis, while providing 30 MOA left and right on horizontal axis.

U.S. Optics 5-25x52 B-25 34mm Riflescope
Brand:U.S. Optics
Objective Lens Diameter (mm):52
Objective Lens Diameter (in):2.04
Ocular Lens Diameter (in):1.40
Ocular Lens Diameter (mm):35
Exit Pupil (mm):2
Diopter (dpt):+2 to -3
Parallax Adjustment (yds):25 - ∞
Field of View @ 100 yds (ft):16.08 - 5.25
Eye Relief (in):3.5
Eye Relief (mm):88.9
Objective Lens Housing Diameter (in):2.3
Objective Lens Housing Diameter (mm):58.63
Tube Diameter (in):1.33
Tube Diameter (mm):34
Overall Length (in):17.93
Overall Length (mm):455.42
Weight (oz):35.9
Weight (kg):1.01
Reticle Illumination:Red
Battery:Lithium Coin, CR2032
Battery Runtime (hours):Up to 8,000
Material:Aluminum, 6061-T6
Finish Color:Matte Black
Elevation Knob:1/4 IPHY EREK 2
Total Elevation Travel:96+
Windage Knob:US#5, 1/4 IPHY
Windage Adjustment Range:12L / 12R

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