The Holosun HS510C FDE (green) brings together two upgrades shooters love: a high-visibility green reticle and a Flat Dark Earth finish, in the wide-window open reflex green dot sight built for AR-15s, carbines, PCCs and shotguns. The green Multi-Reticle System (a 2 MOA dot, a 65 MOA circle, or both combined) is easy to pick up against bright backgrounds, where green often reads crisper than red.
Solar Failsafe supplements the side-loading CR2032 with light, and Shake Awake sleeps the optic when idle — together pushing battery life beyond what most shooters will ever cycle through. A titanium protective hood shields the emitter, and the integrated quick-detach Picatinny mount makes mounting fast and repeatable. In stock for fast UK dispatch.
Related options
Prefer a red reticle? See the HS510C FDE (red). Want the standard black finish? The HS510C in black is the original.
IDEAL FOR
- AR-15 rifles and carbines
- PCC platforms
- Shotguns
- Home-defence and practical rifle setups
- Range training and dynamic shooting
- Shooters wanting a green circle-dot reticle and Flat Dark Earth finish
KEY FEATURES
- Green Multi-Reticle System with selectable 2 MOA dot, 65 MOA circle, or circle-dot reticle
- Solar Failsafe for supplemental power and automatic brightness adjustment
- Shake Awake motion activation with programmable auto-off and memory function
- Large open reflex window for fast target acquisition and wider situational awareness
- 540nm green LED reticle
- Integrated quick-detach Picatinny rail mount
- Flat Dark Earth MAO finish
- Aluminium housing with titanium protective hood
- Side-loading CR2032 battery tray
- Manual brightness, automatic brightness, and Lockout Mode
- 10 daylight and 2 night-vision-compatible brightness settings
- IP67 waterproof construction
TECHNICAL SPECIFICATIONS
| MPN |
HS510C-GR-FDE |
| UPC |
605930624953 |
| Optic Type |
Open Reflex Green Dot Sight |
| Reticle System |
Green Multi-Reticle System |
| Reticle Options |
2 MOA Dot, 65 MOA Circle, Circle-Dot |
| Reticle Colour |
Green |
| Light Source |
LED |
| Wavelength |
540nm |
| Magnification |
1× |
| Window Size |
0.91" × 1.26" |
| Lens Coating |
Multi-Coated |
| Parallax |
Parallax-Free |
| Eye Relief |
Unlimited |
| Housing Material |
Aluminium with Titanium Protective Hood |
| Finish |
Flat Dark Earth (MAO) |
| Battery Type |
CR2032 |
| Battery Location |
Side-Loading Tray |
| Battery Life |
Up to 50,000 Hours at Setting 6 |
| Solar Support |
Solar Failsafe |
| Brightness Settings |
12 Total: 10 Daylight / 2 Night Vision |
| Brightness Modes |
Manual and Automatic |
| Shake Awake |
Yes |
| Lockout Mode |
Yes |
| Auto-Off |
Yes |
| Memory Function |
Yes |
| Adjustment Value |
0.5 MOA per Click |
| Windage & Elevation Travel |
±50 MOA |
| Mount Type |
Integrated Quick-Detach Picatinny Mount |
| Waterproof Rating |
IP67 |
| Vibration Rating |
5000G |
| Operating Temperature |
-30°C to 60°C |
| Dimensions |
3.30" × 1.68" × 1.78" |
| Weight |
4.94 oz |
WHAT'S INCLUDED
- Holosun HS510C-GR-FDE Green Dot Sight with integrated QD Picatinny mount
- Lens cloth
- Multi-tool
- User manual
- Warranty card
UK Delivery & Support
This Holosun HS510C FDE (green) is UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based aftersales support and Holosun's warranty.
Frequently Asked Questions
Why choose a green reticle?
Most eyes pick up green more easily than red in bright daylight, often making the dot appear crisper against light backgrounds.
What reticle options does it have?
A green Multi-Reticle System: a precise 2 MOA dot, a fast 65 MOA circle, or both combined as a circle-dot.
How long does the battery last?
Up to 50,000 hours on a CR2032, with Solar Failsafe and Shake Awake extending that further.
Is it night-vision compatible?
Yes — two of its twelve brightness settings are night-vision compatible.
What other versions are available?
This is the FDE green model; it is also offered in FDE with a red reticle, and in black with a red reticle.
