Description
Never worry about changing batteries again with this enclosed solar-charging green dot sight purpose-built for your Sig P320.
Designed specifically for Sig P320 optics-ready pistols, the Holosun SCS-320-GR combines innovative solar technology with an enclosed emitter design to deliver a maintenance-free red dot experience. The multi-directional light sensors continuously charge the internal 20,000-hour battery while automatically adjusting brightness to match your environment, giving you one less thing to think about during training or carry. Whether you’re in bright sunlight or dim indoor ranges, the crisp green reticle remains visible and your battery stays charged through ambient light exposure.
Key Features
- Solar Charging Technology: Multi-directional light sensors continuously recharge the internal battery using ambient or natural light, providing virtually unlimited runtime with moderate light exposure
- Enclosed Emitter Design: Fully protected window keeps debris, rain, and environmental contaminants away from the optical path for reliable performance in all conditions
- Multiple Reticle System: Switch between 2 MOA dot, 32 MOA circle, or both combined to match your shooting style and application
- Direct Mount Compatibility: Designed for DeltaPoint Pro footprint applications, including Sig P320, P226/229, Springfield Echelon, and other DPP-cut slides without adapter plates
Important Compatibility Notes
- This optic uses a DeltaPoint Pro (DPP) footprint, also known as the Romeo 1 Pro footprint
- Designed for full-size and compact pistols with DPP cuts—not compatible with micro-compact models like P365
- Some users report minor fitment gaps on certain P320 OEM slides, though this does not affect function when properly torqued
- Does NOT include shake-awake feature—optic remains on continuously (battery recharges during storage)
- No manual brightness control—relies entirely on automatic sensors (includes 30-minute high-brightness override function)
Why We Carry It
The Holosun SCS-320-GR represents a significant shift in pistol optic technology by eliminating battery replacement entirely. The internal rechargeable battery can hold a charge for days without light exposure, but with even moderate ambient light from indoor lighting or brief outdoor exposure, the battery continuously replenishes itself. This makes it ideal for defensive firearms that spend time in holsters or safes while still maintaining readiness. The green reticle provides exceptional visibility in bright daylight conditions compared to traditional red dots, and the enclosed design protects the emitter from moisture, debris, and impacts that could compromise open-emitter optics.
Frequently Asked Questions
How long will the battery last without any light exposure?
The internal battery holds a 20,000-hour charge when fully powered. In real-world use, even minimal exposure to indoor lighting or brief outdoor light keeps the battery continuously charging. Users report optics maintaining charge after weeks in dark safes, though regular light exposure ensures optimal performance.
Can I adjust the brightness manually for specific lighting conditions?
The SCS-320-GR uses automatic brightness adjustment only, with sensors that adapt to ambient light. There is no manual brightness control, though you can activate a 30-minute high-brightness override mode by pressing the adjustment button. This design eliminates the need to remember brightness settings across different environments.
Will this fit my Sig P320 model directly without a mounting plate?
Yes, this optic mounts directly to any Sig P320 optics-ready slide with a DeltaPoint Pro cut, including M17, M18, X-Series, and other DPP-equipped variants. It also fits other pistols with DPP footprints like the Springfield Echelon, Sig P226/P229, and aftermarket DPP adapter plates for various platforms.
Spec Sheet
- Reticle: 2 MOA Dot & 32 MOA Circle
- Light Wavelength: 540nm
- Reticle Color: Green
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Magnification: 1x
- Multi-Coatings: Yes
- Power Source: Solar & Internal Rechargeable Battery
- Battery Type: Internal Rechargeable (Non-Removable)
- Battery Life: Unlimited with light exposure
- Brightness Setting: Automatic with 30-Minute Override Function
- Window Size: 0.90″ × 0.63″
- Dimensions: 2″ × 1.05″ × 0.95″
- Weight: 1.35 oz
- Housing Material: 7075 T6 Aluminum
- Surface Finish: Anodized
- Adjustment per Click: 1.5 MOA
- Windage & Elevation Travel Range: ±30 MOA
- Storage Temperature: -40℃ to 70℃ (-40℉ to 158℉)
- Working Temperature: -30℃ to 60℃ (-22℉ to 140℉)
- Water Resistance: IP68 (Submersible)
- Shock Rating: 5000G
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