Primary Arms/Holosun HE507K GR X2 ACSS 2/32 MOA Mini Reflex Sight, Black

Primary Arms/Holosun HE507K GR Features and Performance

The Primary Arms/Holosun HE507K GR is a compact pistol optic built through a collaboration between Holosun and Primary Arms, combining Holosun’s proven micro optic platform with the Primary Arms ACSS Vulcan reticle system. This version is designed for shooters who want a compact open-emitter optic for concealed carry and defensive handgun setups, while adding a reticle system built to make dot acquisition faster and more intuitive.

Instead of a standard micro dot layout, this collaboration model uses the Primary Arms ACSS Vulcan reticle in a green illuminated format. That reticle is designed to help shooters recover the aiming point more quickly during imperfect presentations, making it especially useful on carry guns and defensive pistols. The result is a compact sight that keeps the small footprint of the 507K pattern while adding a reticle system developed specifically to improve handgun optic use.

Built from 7075-T6 aluminum with a hardcoat anodized black finish, this optic is designed for durability while remaining extremely lightweight at just 1 ounce. Its open-emitter layout keeps the overall profile small, making it well suited for slim pistols and concealed-carry handguns. Night vision compatibility and 12 brightness settings give it additional flexibility across a wide range of lighting conditions.

Powered by a CR1632 3V lithium coin battery, this optic offers 50,000+ hours of battery life. With 1 MOA click adjustments and compatibility with the Holosun 407K/507K footprint, it is a practical option for shooters looking for a compact carry optic that combines proven durability with a reticle system tailored for faster pistol dot presentations. For more optics and firearm accessories, visit our accessories collection.

To learn more about this collaboration optic and related product information, see Primary Arms’ official product page and Holosun’s 507K product resources.