ARKEN OPTICS manufactures high-performance precision rifle scopes, night vision optics, and firearm accessories designed for rugged reliability and optical clarity.
ARKEN OPTICS is a precision optics manufacturer renowned for producing high-quality rifle scopes and accessories that balance performance with value. Specializing in First Focal Plane (FFP) scopes equipped with Japanese ELD glass, Arken products are engineered to withstand harsh environments while delivering exceptional clarity and tracking accuracy. The brand's lineup includes the popular EP5, SH4, and EPL series, catering to long-range shooters, hunters, and tactical enthusiasts.
In addition to traditional day optics, Arken Optics has expanded into digital night vision technology, offering devices generally compatible with their mobile ecosystem for ballistic data. The company emphasizes "Rugged Precision," ensuring that its optics feature robust turret systems, zero-stop mechanisms, and illuminated reticles suitable for diverse lighting conditions. Based in the USA, Arken Optics supports its community with a strong warranty program and dedicated customer support.
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Use a 2mm Allen wrench to loosen the AZS Set Screw on the elevation turret, raise the AZS Zero Stop, and zero your scope. Once zeroed, rotate the AZS clockwise until it bottoms out, then tighten the set screw.
The ZHD520R uses a flat-top 18650 battery. It can also be powered via the USB-C port with a 5V2A adapter.
Rotate the Parallax Adjustment Turret until the target is sharp and all reticle movement within the eye box relative to the target is eliminated.
Look at the top of the elevation turret. The scale indicated there will specify whether your unit uses Milliradians (MIL) or Minute of Angle (MOA).