Holosun HE507K-GR X2 507 Compact Reflex Green Dot Sight

Holosun HE507K-GR X2 Compact Open Reflex Sight is a pistol-mounted optic designed to deliver fast, flexible aiming on subcompact and concealed-carry handguns. This open-reflex sight features a selectable green reticle system, allowing users to choose between a precise 2 MOA center dot, a 32 MOA circle, or a combined circle-dot configuration depending on shooting preference and application.

The HE507K-GR X2 is engineered to improve sight acquisition on compact pistols without adding unnecessary bulk. Its small footprint and lightweight construction make it well suited for concealed carry, while Holosun’s Multi-Reticle System provides adaptability for both rapid target acquisition and more deliberate aiming. Shake Awake technology ensures the optic remains ready for use by automatically powering on when motion is detected, while Lock Mode and redesigned low-profile buttons help prevent accidental setting changes during carry.

Key Features

• Open-reflex pistol optic optimized for subcompact handguns

• Multi-Reticle System with selectable 2 MOA dot, 32 MOA circle, or circle-dot

• Green LED reticle for high visibility in varied lighting conditions

• Compact footprint with approximately 1.8″ overall length

• Lightweight design with listed weight of approximately 2.65 oz

• Shake Awake technology with reported battery life up to 50,000 hours

• Side-mounted battery tray allows battery replacement without removing the optic

• Lock Mode prevents inadvertent reticle or brightness changes

• Redesigned low-profile control buttons reduce accidental activation

Specifications & Construction

The HE507K-GR X2 features a CNC-machined 7075 aluminum housing with a black anodized finish for durability and corrosion resistance. Optical performance includes a 1× magnification sight picture, unlimited eye relief, and a viewing window measuring approximately 0.58″ × 0.77″. Multi-coated lenses provide a clear image, and the optic is described as parallax free. Windage and elevation adjustments are user-adjustable with a reported 1 MOA per click increment. The unit is listed as waterproof for routine carry and range environments.

Compatibility & Intended Use

This optic is intended for subcompact pistol platforms commonly used for concealed carry, duty backup, and compact range setups. Provided data notes direct-fit compatibility with SIG P365X and P365XL slides, while pistols using a four-boss interface may require an adapter plate. Mounting hardware is not included, and slide footprint compatibility should be verified prior to installation.

Typical applications include concealed-carry pistols, compact duty handguns, and general-purpose carry firearms where a lightweight, open-reflex green dot optic is preferred.

What’s Included

• Holosun HE507K-GR X2 compact open reflex sight

• CR1632 battery (installed, per manufacturer configuration)

• User documentation