Holosun SCS 320 Green Dot Sight Multi-Reticle System Solar Charging
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The Holosun SCS 320, part SCS-320-GR, is a 1x enclosed green dot sight that mounts straight onto SIG Sauer P320 optics-ready slides and charges itself from ambient light.
There is no battery tray on this sight because there is no removable battery. An internal cell charges from the panel on top, and Holosun quote 20,000 hours of reserve running once it is charged.
The housing is 7075 aluminium, rated IPX8 and tested to 5000G, weighing 1.35 oz and measuring 1.85 x 1.15 x 1.06 in over a 0.9 x 0.63 in window. The emitter is fully enclosed. Brightness is automatic, with a manual Brightness Override that holds maximum output for thirty minutes when it is called for, and Shake Awake handles standby. Windage and elevation move in 1.5 MOA clicks with 30 MOA of travel either way.
The Multi-Reticle System gives a 2 MOA green dot, a 32 MOA circle or the two combined, so the aiming reference can be matched to the job. Mounting is the point of this version: it is cut for the P320 slide pattern directly, with no plate to buy, lose or leave loose, and Holosun also list it against the DPP footprint. That specificity is the limitation too, since it is not an RMR- or RMSc-footprint sight and will not fit slides cut for those.
It is cut for the SIG Sauer P320 optics-ready slide and the DPP footprint, so it is not interchangeable with RMR- or RMSc-pattern sights. The same solar-charging optic is made for other hosts: SCS MOS for Glock MOS slides, SCS P10 for the CZ P-10 and SCS Carry for slimline slides.
| Type | Enclosed green dot sight, 1x |
|---|---|
| Reticle | 2 MOA dot / 32 MOA circle / circle-dot, green |
| Window | 0.9 x 0.63 in |
| Mounting | Direct to SIG Sauer P320 optics-ready slides; DPP footprint |
| Power | Internal rechargeable cell, solar charging, approx. 20,000 hours reserve |
| Brightness | Automatic, plus a 30 minute manual maximum override |
| Adjustment | 1.5 MOA per click, 30 MOA either way |
| Features | Shake Awake |
| Dimensions | 1.85 x 1.15 x 1.06 in |
| Weight | 1.35 oz |
| Housing | 7075 aluminium, IPX8, 5000G |
| MPN | SCS-320-GR |
Nothing to charge, nothing to replace and nothing to set before the first shot. Order the SCS 320 today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Enclosed Red Dot Sights, SCS MP2 Green Dot or browse all Green Dot Sights
| Brand | Holosun |
|---|---|
| Part no. | SCS-320-GR |
| Category | Red Dot Sight |
| Barcode | 810047072836 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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