US Optics B-10 1.8-10x42

• 1.8-10x magnification range: This zoom span covers fast, close work at the low end and gives enough top-end magnification for more deliberate shots at distance, making the scope useful across mixed hunting and tactical roles.
• First focal plane illuminated reticle: The reticle stays in proportion as magnification changes, so holdovers remain consistent throughout the zoom range, while illumination helps the aiming point stand out against dark targets and cluttered backgrounds.
• Lockable tactical turrets with zero stop: The turret system is built for dialing in the field without accidental movement, and the zero-stop feature makes it faster to return to a known baseline after elevation corrections.
• Side parallax adjustment from 27 m to infinity: Fine parallax control helps keep the target and reticle on the same focal plane, which supports more precise shot placement across changing distances.
• 34 mm tube and fully multicoated optics: The large main tube provides substantial adjustment travel, while the lens coatings help maintain contrast and brightness for clearer target definition in difficult light.

About the US Optics B Series

The US Optics B Series was built around a compact group of variable-power riflescopes that includes the B-10, B-17, and B-25. Within the U.S. Optics lineup, the series was aimed at shooters who wanted magnification ranges familiar to professional users, but in a more standardized package than the company’s earlier custom-heavy approach. The B Series combines practical field features with a mechanical layout suited to tactical optics and precision-oriented use.

A defining trait of the line is its focus on locking elevation and windage knobs, an EK2 stop, a revolution counter, and tool-free elevation zeroing. In practice, that means the scopes are set up for repeatable dialing and easier return to zero after corrections. The series also uses single-button reticle illumination integrated into the parallax knob, which keeps the control layout compact and easy to manage from the shooting position. Depending on configuration, B-Series scopes were offered with either 1/10 mil or 1/4 IPHY adjustments, giving shooters a choice that matched their preferred correction system.

About the US Optics B-10 1.8-10x42

The US Optics B-10 1.8-10x42 is the most versatile low-to-mid magnification model in the B Series, built for shooters who need one riflescope to cover short-range speed and more deliberate work at distance. Its 1.8-10x magnification range gives a broad operating window: the low end remains practical for fast target acquisition and positional shooting, while 10x provides enough image scale for precise holds and shot placement on smaller or more distant targets. That makes the B-10 a strong fit for general-purpose tactical rifles, practical field rifles, and hunting setups that may move between woodland, open ground, and intermediate-range engagements.

The scope uses a first focal plane reticle, which keeps reticle subtensions true throughout the zoom range. For shooters who hold for elevation or wind instead of dialing every correction, that consistency matters because the reticle remains usable at any magnification setting. Reticle illumination, including daytime usability, helps the aiming point stay visible against dark cover or complex backgrounds, and the automatic shut-off function helps preserve battery life when the optic is left on between stages or stalks.

Mechanically, the B-10 is configured like a serious dialing optic. Its lockable tactical turrets, double-turn layout, and zero-stop system support repeatable elevation changes while reducing the chance of losing track of turret position. The 34 mm tube provides generous internal adjustment, and side parallax adjustment from 27 m to infinity helps sharpen the image and reduce aiming error as distances change. Fully multicoated lenses, nitrogen filling, and waterproof, fogproof, and shockproof construction round out a scope designed for hard field use rather than bench-only shooting.

About US Optics

U.S. Optics was founded in 1991 in Buena Park, California, and built its reputation around riflescopes for demanding shooting applications. The company is a U.S. manufacturer of riflescopes and other shooting optics, serving competitive shooters, hunters, and defense-oriented users. Among its notable lines is the SN-3, a scope family that helped establish the brand’s standing in precision and tactical optics.

U.S. Optics also helped pioneer low-power variable optics, a category that has become central to modern carbine and general-purpose rifle setups. In 2014, the company expanded its commercial off-the-shelf offerings with lines such as SR, ST, MR, LR, and ER, broadening access to its design approach beyond fully custom builds. The engineering team is located in Connelly Springs, North Carolina, reflecting the company’s continued focus on riflescope design and mechanical functionality for serious field use.

Main Features

• Magnification: 1.80 x - 10.00 x
• Objective lens diameter: 42.00 mm
• Main tube diameter: 34 mm
• Reticle position: 1. focal plane - FFP
• Reticle illumination: Yes
• Daytime illumination: Yes
• Automatic shut-off: Yes
• Turret type: Tactical - Lockable
• Zero-Stop: Yes
• Turret turns: DT - Double Turn
• Elevation adjustment range: 31.39 mrad / 110.00 MOA
• Windage adjustment range: 31.39 mrad / 110.00 MOA
• Eye relief: 89.00 mm - 90.00 mm
• Field of view: 3.80 m/100m - 12.10 m/100m
• Parallax adjustment: Yes - side focus
• Parallax adjustment range: 27 m to infinity
• Diopter adjustment: -3/+2
• Lens coatings: Fully Multicoated
• Length: 330.00 mm
• Weight: 822.00 g
• Nitrogen filled: Yes
• Waterproof: Yes
• Fogproof: Yes
• Shockproof: Yes

Warranty

10 years. The US Optics B-10 1.8-10x42 is specified with a 10-year warranty period.