Primary Arms GLx 10x42

• 10x42 configuration: The 10x magnification gives enough reach for scanning open ground, identifying game, and picking out distant detail, while the 42 mm objective size keeps the binoculars manageable for all-day carry.
• ED optical design with fully multicoated lenses: This combination helps improve contrast, color definition, and overall image clarity, which makes it easier to separate animals or terrain features from complex backgrounds.
• Magnesium roof-prism body: The magnesium construction keeps weight down without making the binoculars feel fragile, so they are easier to carry on long hunts or extended observation sessions.
• 4.3 mm exit pupil and 15.2 mm eye relief: The optical layout supports a bright, comfortable view in mixed light and gives eyeglass wearers a more usable sight picture.
• Waterproof, fogproof construction: Nitrogen filling and sealed construction help the binoculars stay clear and dependable when moving between temperature changes or using them in wet weather.

About the Primary Arms Gold Series GLX Series

The Primary Arms Gold Series GLX line sits above the company’s entry-focused ranges and is aimed at users who want a more refined balance of optical performance, mechanical quality, and field durability. In the Primary Arms lineup, GLX products are built for shooters and outdoorsmen who need dependable equipment for regular use, but do not necessarily need the size, weight, or cost that often comes with the brand’s top-tier offerings.

Within this series, the emphasis is on practical performance. GLX optics typically focus on clear glass, robust housings, and thoughtful controls that are easy to use in the field rather than adding unnecessary complexity. In the binocular category, that means a compact roof-prism format, strong low-light usability for the size class, and a viewing experience designed for hunting, wildlife observation, and general outdoor glassing. ED glass, fully multicoated lenses, and lightweight metal construction are the kinds of features that define the series, helping GLX binoculars deliver a cleaner image and better handling than basic utility models. The result is a product family intended for users who want serious hunting optics in a portable, field-ready form.

About the Primary Arms GLx 10x42

The Primary Arms GLx 10x42 is a general-purpose binocular built around one of the most versatile formats in hunting and outdoor observation. 10x magnification gives enough reach to judge animals, terrain, and distant landmarks more precisely than an 8x model, while the 42 mm objective lenses keep the binoculars compact enough for chest-rig or pack carry. That balance makes this model well suited to hunting from mixed terrain, glassing from ridgelines, and general wildlife observation where detail matters but bulk becomes a drawback.

The optical system uses ED glass and fully multicoated lenses to improve image definition, contrast, and color fidelity. In practice, this helps reduce the washed-out look that can make distant subjects blend into brush, rock, or shadow. The Schmidt/Pechan roof prism design keeps the body slim and easy to pack, and the central focusing system allows quick adjustment when shifting from nearby cover to distant targets. A 4.3 mm exit pupil supports a bright, easy view in changing light, while 15.2 mm eye relief gives a more comfortable viewing position for extended sessions and better accommodation for eyeglass wearers.

Mechanically, the binoculars are built around a magnesium housing that reduces carry weight without sacrificing rigidity. Waterproof and fogproof construction, combined with nitrogen filling, helps maintain reliability in rain, cold mornings, and rapid temperature changes. With a close focus of 2.00 m, the GLx 10x42 also remains useful for shorter-range observation, making it a flexible binocular rather than a narrow, distance-only tool.

About Primary Arms

Primary Arms Optics was founded in 2008 and has grown into a Texas-based optics company with its headquarters in Houston, Texas, United States. The brand is known for designing optics across several categories, including rifle scopes, prism scopes, red dot sights, mounts, and accessories, with product families such as PLx, GLx, SLx, and CLx covering different performance tiers.

A defining part of the company’s identity is its in-house optics technology, especially the ACSS reticle system, which helped establish Primary Arms as a serious name in practical shooting optics. The company also developed AutoLive motion-sensing illumination technology for compatible optics. Alongside product design and manufacturing, Primary Arms operates e-commerce, wholesale distribution, and government sales divisions, reflecting a broad focus on both civilian and professional users.

Main Features

• Product type: Binoculars
• Series: Primary Arms Gold Series GLX
• Made in: Philippines
• Magnification: 10.00 x
• Objective lens diameter: 42.00 mm
• Prism type: Roof - Schmidt/Pechan
• Field of view: 113.60 m/1000m
• Field of view (deg.): 6.50 °
• Exit pupil: 4.30 mm
• Eye relief: 15.20 mm
• Close focus: 2.00 m
• Lens coating: Fully Multicoated
• Focusing system: Central
• Diopter setting position: Right eye-piece
• Body type: Single hinge
• Housing material: Magnesium
• Filled with: Nitrogen
• Waterproof: Yes
• Fogproof: Yes
• Length: 140.00 mm
• Width: 127.00 mm
• Height: 51.00 mm
• Weight: 673.00 g

Warranty

10 years. Primary Arms states a 10-year warranty for this binocular, providing defined long-term coverage for regular field use.

In the Box

• Soft case
• Neoprene neck strap