Primary Arms Holosun HE507K-GR-X2 ACSS Green Reflex Sight - K Footprint

The Primary Arms Holosun HE507K-GR-X2-ACSS is a compact open-reflex pistol sight co-developed by Holosun and Primary Arms. Built on the proven Holosun HE507K X2 platform and fitted with the exclusive Primary Arms ACSS Vulcan reticle, this optic is sized and shaped for subcompact concealed-carry pistols cut for the Holosun K footprint. It delivers fast, intuitive target acquisition in a lightweight, snag-resistant package purpose-built for everyday carry and defensive use.

The green LED projects the proprietary ACSS Vulcan reticle, pairing a central 3 MOA aiming dot with a 230 MOA outer guide ring. The outer ring draws the eye to the center of the optic for rapid indexing and gives the shooter a clear visual cue when their presentation is off-axis. The green illumination offers excellent visibility across most lighting conditions, and on medium brightness settings the sight delivers up to a 40,000-hour runtime.

The housing is lightweight and durable, finished in a low-glare matte black anodized coating that holds up to daily carry. Its narrower footprint sets it apart from full-size reflex sights, allowing it to sit cleanly on K-footprint slides without overhang. Whether for everyday carry or as a backup duty optic on a subcompact pistol, the HE507K-GR-X2-ACSS brings the ACSS Vulcan aiming solution to one of the most popular concealed-carry reflex platforms available.