Holosun HE507C-GR X2 BB Green Multi-Reticle Reflex Sight - Compact

In this review of the Holosun HE507C-GR X2 BB, the bottom line is straightforward: this open reflex sight is built for full-sized pistols and delivers a bright, versatile green reticle with long battery life and practical power redundancy. The strongest reason to consider it is the combination of a green Super LED with up to 50,000 hours of life and Solar Failsafe, which keeps the dot usable in a wide range of lighting conditions while the Shake Awake feature conserves power when the pistol is idle.

Key Features

• Multi-Reticle System: The 2 MOA dot inside a 32 MOA circle gives a precise aiming point for accuracy with a fast reference circle for quicker target acquisition.
• Solar Failsafe: A backup power source keeps the reticle visible in natural or artificial light if the CR1632 battery fails, reducing the risk of being left without an aiming point.
• Long Battery Life: Holosun's green Super LED delivers an estimated 50,000 hours of battery life, meaning many seasons of use before battery replacement is needed.
• Shake Awake Technology: The optic conserves power by deactivating the LED when not in use and instantly reactivates with the slightest motion for immediate readiness.
• Durable Construction: The housing is machined from 7075 T6 aluminum with an anodize finish and uses an industry standard footprint for straightforward mounting on full-sized pistol slides.
• Lock Mode and Side Battery Tray: The Lock Mode prevents accidental setting changes, and the side-mounted CR1632 tray makes battery swaps easier without removing the optic from the pistol.

Who It's For

The HE507C-GR X2 BB is best for handgun owners who want a robust, feature-rich red-dot style sight with a bright green reticle and low maintenance. It suits competitive shooters and duty or carry users who value quick target acquisition and a reliable backup power option.

Less-suitable users include those who prefer reflex sights for compact carry pistols with non-standard footprints or shooters who need an integrated magnifier; this model is optimized for full-sized pistols and 1x magnification only.

Pros & Cons

Pros

• Very long CR1632 battery life paired with Solar Failsafe gives dependable on-target time.
• Multi-reticle arrangement (2 MOA dot + 32 MOA circle) balances precision and speed.
• Robust 7075 T6 aluminum housing and industry standard footprint make it durable and easy to install.
• Shake Awake and Lock Mode reduce accidental drain and inadvertent setting changes.

Cons

• Designed for full-sized pistols only, so fit and footprint may not suit all compact slides.
• Green wavelength may be less visible through some night vision equipment compared with other color options.

Specifications

Reticle	Green 2 MOA Dot & 32 MOA Circle
Battery	CR1632 (side-mounted tray)
Battery Life	Approximately 50,000 hours
Housing	7075 T6 Aluminum, anodize finish
Window Size	0.63 x 0.91 in
Brightness Settings	10 Daylight & 2 NV
Adjustment	1 MOA per click, 50 MOA travel

Our Verdict

The Holosun HE507C-GR X2 BB is a practical, well-engineered pistol sight for those who prioritize a bright green reticle, long battery life, and reliable backup power. Its durable 7075 aluminum body, Shake Awake and Lock Mode features, and easy battery access make it a solid value for full-sized pistol owners who want a versatile, low-maintenance optic.

Frequently Asked Questions

Does it work if the battery dies?
Yes; Solar Failsafe provides a backup power source in adequate ambient light when Auto Mode is active so the reticle can remain visible.

Can the buttons be locked to prevent changes?
Yes; Lock Mode disables the adjustment buttons to prevent inadvertent setting changes while carried or in the holster.

Is this sight compatible with compact pistol slides?
It is designed for full-sized pistol applications and uses an industry standard footprint, so compact slides may not be compatible without specific footprint matching.