Primary Arms SLx 10x42

• 10x42 configuration: The 10x magnification gives enough reach for scanning open ground, identifying game, and following distant movement, while the 42 mm objective size keeps the binoculars practical to carry for long periods.
• Roof prism design: The Schmidt/Pechan roof prism system keeps the body slim and easy to pack, making these binoculars simpler to carry on hunts, hikes, and general field use than bulkier prism layouts.
• Fully multicoated lenses: Full multi-coating improves light transmission and contrast, helping the image stay clearer in low, flat light at dawn, dusk, or under tree cover.
• 16 mm eye relief: Generous eye relief makes the view more comfortable over extended sessions and gives eyeglass wearers a better chance of seeing the full field without constant repositioning.
• Waterproof, fogproof construction: A nitrogen-filled housing resists internal fogging and handles wet weather better, so the binoculars remain usable when temperature and conditions change in the field.

About the Primary Arms Silver Series SLX Series

The Primary Arms Silver Series SLx line sits as the brand’s practical, value-focused family of optics, built for shooters and outdoors users who want dependable performance without moving into the more specialized GLx or PLx tiers. Across the lineup, SLx products emphasize straightforward function, durable construction, and proven core features rather than unnecessary complexity. That approach makes the series especially relevant for hunting optics, range use, and general outdoor observation.

Within the series, the design philosophy centers on equipment that is easy to use, easy to carry, and durable enough for regular field work. In binocular form, that means compact roof prism construction, weather-resistant housings, and optical systems tuned for a useful balance of brightness, field awareness, and portability. The SLx family is intended for users who need reliable glass for scanning terrain, spotting movement, and staying mobile over long days outdoors. Rather than chasing extreme size or weight savings, the series balances handling, optical clarity, and everyday ruggedness, which is why it fits well in hunting, ranch, and general-purpose observation roles.

About the Primary Arms SLx 10x42

The Primary Arms SLx 10x42 is a standard-size binocular built around one of the most versatile field formats available. 10x magnification gives enough image scale to judge detail at distance, making it well suited to glassing field edges, checking distant landmarks, or following wildlife across open country. At the same time, the 42.00 mm objective lenses provide a useful balance between brightness and portability, so the binoculars remain practical for all-day carry instead of becoming burdensome around the neck or in a pack.

The optical system uses Schmidt/Pechan roof prisms and fully multicoated lenses, a combination that supports a compact shape while helping preserve contrast and image brightness. In practical use, that means a cleaner, more usable view in mixed lighting, especially during the early and late parts of the day when animals are often most active. The 103.00 m/1000m field of view is wide enough to scan efficiently without making the image feel too narrow, while the 1.80 m close focus adds flexibility for nearby observation.

Handling is equally important here. A central focusing system allows quick adjustment as viewing distances change, and the right eye-piece diopter adjustment helps fine-tune the image to the user’s eyesight. With 16.00 mm eye relief and a 4.20 mm exit pupil, the binoculars remain comfortable for extended viewing and workable for many eyeglass wearers. The polymer body, nitrogen filling, and waterproof and fogproof construction make this model a sensible choice for regular outdoor use where weather, temperature shifts, and constant transport are part of the job.

About Primary Arms

Primary Arms Optics was founded in 2008 and is headquartered in Houston, Texas, United States. The company develops optics while also supporting e-commerce, wholesale distribution, and government sales, giving it a broad presence across both consumer and professional channels. Its catalog covers rifle scopes, prism scopes, red dot sights, mounts, and accessories, with product families such as PLx, GLx, SLx, and CLx organized around different performance tiers and use cases.

Primary Arms is especially well known for building practical optics around clear feature sets and recognizable in-house systems. Among the brand’s notable technologies is the ACSS reticle system, which has become a defining part of its optics identity. That focus on application-driven design carries across the lineup, including binoculars, where the emphasis remains on useful field performance, durability, and accessible operation rather than unnecessary complication.

Main Features

• Series: Primary Arms Silver Series SLX
• Magnification: 10.00 x
• Objective lens diameter: 42.00 mm
• Prism type: Roof - Schmidt/Pechan
• Lens coating: Fully Multicoated
• Field of view: 103.00 m/1000m
• Field of view (angular): 5.90 °
• Exit pupil: 4.20 mm
• Eye relief: 16.00 mm
• Close focus: 1.80 m
• Focusing system: Central
• Diopter setting position: Right eye-piece
• Body type: Single hinge
• Housing material: Polymer
• Nitrogen filled: Yes
• Waterproof: Yes
• Fogproof: Yes
• Length: 142.00 mm
• Width: 127.00 mm
• Height: 51.00 mm
• Weight: 586.00 g
• Made in: China

Warranty

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

In the Box

• Soft case
• Carrying strap