The Holosun 507K X2 green multi-reticle open reflex sight (Holosun part no. HE507K-GR X2) is a compact open reflex optic designed for subcompact and micro-compact pistols. Its green Multi-Reticle System lets you select a 2 MOA dot, a 32 MOA circle or the circle-dot combination for adaptable aiming. A slim K footprint profile, Shake Awake and a side-loading battery tray support reliable concealed carry. Holosun builds the footprint for many micro-compact optics-ready pistols, including the SIG P365 series and similar platforms.

Key Specifications

• The reticle is a green Multi-Reticle System with a 2 MOA dot, 32 MOA circle or circle-dot combination.
• The emitter is a 540nm green Super LED, giving strong contrast in bright environments.
• Mounting uses the Holosun K footprint, designed for micro-compact optics-ready pistols such as the SIG P365 series and similar platforms.
• Shake Awake powers the optic on with motion and off when idle to preserve battery life.
• A lockout mode locks the control buttons, preventing accidental changes during carry.
• Brightness has 10 daylight and 2 night vision compatible settings for a range of lighting.
• The battery is a CR1632 in a side tray with up to 50,000 hours of runtime at setting 6.
• The housing is 7075-T6 aluminum with a black anodized finish, IP67 waterproofing and 5000G vibration resistance.
• The window measures 0.58 by 0.77 inches, and the body is 1.6 inches long.
• The sight weighs 1 ounce, and adjustments are 1 MOA per click with plus or minus 30 MOA of travel.

Frequently Asked Questions

Will it fit a SIG P365? Holosun lists the K footprint as direct-mounting on many micro-compact optics-ready pistols, including the SIG P365 series and similar platforms.

What reticles can I choose? The Multi-Reticle System offers a 2 MOA dot, a 32 MOA circle, or the circle-dot combination, all in green.

How do I change the battery? The CR1632 battery loads from a side tray, so you can swap it without removing the optic.

Buy the Holosun 507K X2 Green Multi-Reticle Open Reflex Sight, Subcompact

This is a slim, flexible green reticle for pistols that carry every day. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more red dot sights while you are here.