Holosun SCS-320-GR vs HS503R: Which Red Dot?
By Precision Optique | Published: 2026-10-30
Category: Comparisons
Compare the Holosun SCS-320-GR and HS503R red dot sights. Find out which one fits your shooting style, budget, and needs with our honest trade-off guide.
Quick answer
Choose the Holosun SCS-320-GR for its solar-powered auto-brightness and switchable red/green reticle; pick the HS503R if you want a proven, more affordable micro red dot with a familiar rheostat control.
Reticle flexibility vs. simplicity
The SCS-320-GR lets you switch between red and green reticles, which can help in different lighting or backgrounds. The HS503R uses a single red reticle but offers a choice of reticle patterns via a new rheostat dial. If you value color options, the SCS-320-GR wins; if you prefer a straightforward red dot with pattern choices, the HS503R is simpler and lighter on the wallet.
Power management: solar vs. battery
The SCS-320-GR features a solar mode with automatic brightness adjustment, extending battery life significantly in daylight. The HS503R relies on a standard LED and rheostat, which is reliable but lacks solar assistance. For shooters who want set-and-forget brightness outdoors, the SCS-320-GR is a clear advantage. If you're comfortable managing brightness manually and want a lower price, the HS503R remains a strong performer.
Trade-offs at a glance
- Reticle color: SCS-320-GR: switchable red/green. HS503R: red only.
- Brightness control: SCS-320-GR: solar auto-adjustment. HS503R: manual rheostat dial.
- Price: SCS-320-GR: USD 339.70 (catalog price). HS503R: USD 274.36 (catalog price).
- Build & size: SCS-320-GR: compact open reflex with titanium hood. HS503R: micro reflex with aluminum body.
Product facts
- Point rouge Holosun SCS-320-GR: The Holosun SCS-320-GR is a compact open reflex sight with a switchable red/green reticle, solar auto-brightness, a large lens, and a titanium hood over an aluminum body. The solar auto-brightness and large lens help you acquire the dot faster in changing light without fiddling with controls.
Point rouge Holosun SCS-320-GR - Point Rouge Holosun HS503R: The Holosun HS503R is a micro reflex sight with a red reticle, a new rheostat dial for brightness, and a durable aluminum body, designed for sport shooting and airsoft. Its compact size and lower price make it a practical choice for shooters who want Holosun reliability without the cost of solar features.
Point Rouge Holosun HS503R
Which one fits you?
Best for
- Shooters who want solar-powered auto-brightness and a green reticle option (SCS-320-GR)
- Budget-conscious buyers who need a reliable micro red dot for sport shooting or airsoft (HS503R)
Not for
- Those who prefer a manual brightness dial and don't need green reticle (skip SCS-320-GR)
- Shooters who want solar features and a larger lens at a low price (skip HS503R)
