Description
The Holosun HS507C-X2 delivers multi-reticle versatility and solar-powered reliability in a pistol optic designed to withstand duty use and competition demands.
Whether you’re running drills at the range, carrying concealed, or competing in matches, having a red dot that stays powered and properly configured matters. The Holosun HS507C-X2 combines three reticle options with dual power sources and a side-loading battery tray that lets you swap batteries without losing your zero. The Lock Mode feature prevents accidental setting changes during holstered carry, while Shake Awake technology ensures your sight activates instantly when you need it.
Key Features
- Side-Loading Battery Tray: Replace the CR1632 battery without removing the optic from your slide, preserving your zero and saving time at the range
- Lock Mode Protection: Prevents inadvertent button presses during concealed carry or duty use, keeping your brightness and reticle settings locked when holstered
- Solar Failsafe Backup: Integrated solar panel provides backup power in natural or artificial light conditions, ensuring your optic remains operational even if the battery fails
- Multi-Reticle System (MRS): Toggle between three reticle options—2 MOA dot only, 32 MOA circle only, or combined circle-dot—without re-zeroing, all projected from the same LED
Important Compatibility Notes
The HS507C-X2 uses the RMR (Trijicon RMR) footprint, which is widely supported but requires specific mounting solutions:
- Glock MOS pistols: Requires the RMR adapter plate
- Sig P365/P365XL: NOT compatible – these models require the smaller K footprint optic
- Sig P320 (non-AXG): May require RMR adapter plate depending on optic cut
- Sig P320 AXG Scorpion: NOT directly compatible—requires RMR adapter plate
- Gen 3 Glock pistols (non-MOS): Requires slide milling or dovetail adapter plate
- Most pistols with factory RMR cuts: Direct mount compatible
Always verify your specific pistol’s optic cut pattern before purchasing. When mounting to Glock MOS pistols, use only the mounting screws provided by Holosun to avoid cross-threading.
Why We Carry It
We stock this optic because it solves real-world reliability concerns that shooters face: dead batteries during critical moments, accidental setting changes during carry, and the inconvenience of removing an optic just to swap batteries. Law enforcement officers and military personnel who can personally select their optics increasingly choose the 507C series for daily carry, and competitive shooters rely on its fast target acquisition for match performance.
Frequently Asked Questions
Will this fit my pistol without modifications?
The HS507C-X2 uses the RMR footprint and fits any pistol with an RMR-pattern optic cut. For Glock MOS pistols, you’ll need the included RMR adapter plate. For pistols without factory optic cuts, you’ll need either slide milling or a dovetail-mount adapter. The 507C will NOT fit micro-compact pistols like the Sig P365 series, which require the smaller 507K model instead.
How does the Solar Failsafe actually work in real conditions?
The Solar Failsafe activates when the optic is in Auto Mode and provides backup power whenever natural or artificial light is available. If your CR1632 battery dies, the solar panel will continue powering the reticle as long as there’s sufficient ambient light. The reticle brightness automatically adjusts based on available light, becoming brighter in daylight and dimmer in low-light conditions. Some shooters report running their optics for months without battery power by relying solely on the solar panel during daytime use.
What’s the difference between the X2 and the earlier V2 model?
The X2 model adds two specific improvements over the V2: Lock Mode (which prevents accidental setting changes by locking the buttons) and redesigned button placement that sits lower on the housing to reduce inadvertent activation during holstered carry. Both models feature the side-loading battery tray and identical optical performance. The X2 essentially represents Holosun’s response to feedback from law enforcement and concealed carriers who experienced accidental button presses with the V2.
Spec Sheet
Optical Data
- Reticle: 2 MOA Dot & 32 MOA Circle
- Light Wavelength: 650nm
- Reticle Color: Red
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Magnification: 1x
- Multi-Coatings: Yes
Electronic Data
- Power Source: Solar & Battery
- Battery Type: CR1632
- Battery Life (Hours): 50,000
- Brightness Settings: 10 Daylight & 2 Night Vision Compatible
Mechanical Data
- Housing Material: 7075 T6 Aluminum
- Surface Finish: Anodized Black
- Adjustment per Click: 1 MOA
- Windage & Elevation Travel Range: ±50 MOA
- Window Size: 0.63″ × 0.91″
- Dimensions (inches): 1.78″ × 1.15″ × 1.15″
- Weight (ounces): 1.5
Environment Data
- Storage Temperature: -40°C to 70°C
- Working Temperature: -30°C to 60°C
- Submersion Rating: IP67
- Vibration Resistance: 5000G
