September 28, 2023
Holosun SCS-320 Solar Charging Sight for SIG P320 Handguns
Holosun SCS-320 Solar Charging Sight for SIG P320 Handguns

Modular firearms are nothing new. They’ve been around for well over 100 years. Despite this, SIG successfully developed one of the most modular pistols.

So successful that the US Armed Forced uses a variant of these modular pistols as the M17/18. The civilian model of the M17/18 is the SIG P320, a pistol that can be customized for concealed carry, competition, or just plinking at the range. Users can attach a pistol optic with their milled slides for some of the best and most consistent loadouts.

Holosun SCS-320 (Solar Charging Sight)

The SCS-320 (Solar Charging Sight) is designed for P320 optics-ready handguns and other DPP footprints. It takes the already well-designed P320 and augments it for optimal performance. The new Holosun SCS-320 Solar Charging Weapon Sight optic attaches directly to the P320 slide without needing an adapter plate. For perfect reticle illumination, the unit uses multidirectional light sensors in complement with a solar charging system to adjust brightness automatically. The SCS can operate indefinitely using an internal, rechargeable 20,000-hour battery, meaning you will never need to change batteries again. While brightness is automatically calibrated, an intensity override function locks the optic into a high-brightness mode for 30 minutes.

Three reticle options are available for the SCS320;

  • MRS 32 MOA circle with 2 MOA dot,
  • standalone 2 MOA dot,
  • or standalone 32 MOA circle.

Adjustments are 1 MOA per click with a full +/- 30 MOA travel range.

The aspheric glass lens provides zero distortion and is protected in the 7075 T6 aluminum housing and nitrogen purged for the best results. To be as watertight as possible, the SCS320 is IPX8 certified. 0.90×0.63 inch window provides a large area of view with superior optics availability.

For those shooters who want to incorporate one of the best and newest long-life optics for their P320 pistol, the Holosun SCS320 is made to fit the bill. There are fewer pieces to keep track of, there is no need for additional maintenance tools, and no longer will a user need to keep spare batteries on hand. Learn more about the Holosun SCS-320 at:

Warranty information can be found here.

Holosun SCS-320 Solar Charging Weapon Sight
Holosun SCS-320 Solar Charging Weapon Sight

Holosun SCS-320 (Solar Charging Sight) TECH & FEATURES

  • 20,000-Hour Power Reserve
  • Aspherical Glass Lens with Zero Distortion
  • Solar Charging Internal Battery
  • Multi-Sensor Auto Brightness
  • Brightness Intensity Override System
  • Multiple Reticle System (MRS): 32 MOA Circle & 2 MOA Dot; 2 MOA Dot; 32 MOA Circle
  • Direct Fit For Sig Sauer Optics-Ready P320 Handguns & DPP Footprint Applications


  • IPX8 Certified Waterproof
  • Nitrogen Purged Enclosed Housing
  • Travel Range ± 30 MOA
  • 1.5 MOA Windage & Elevation Adjustment Per Click
  • Window Size: 0.90 × 0.63 in
  • 7075 T6 Aluminum Housing

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Holosun Technologies

Holosun Technologies, Inc., located in City of Industry, California, is committed to creating innovative optic and laser/IR technologies that benefit a broad range of shooting, hunting, law enforcement and professional needs. Using the quality manufacturing standards demanded by some of the best-known optics brands in the world, with a wide range of affordable options, Holosun is at the forefront of development of new sight technologies.

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