The Holosun HS510C and HM3X Combo (HS510C+HM3X) pairs the HS510C open reflex red dot sight — Multi-Reticle System with a 2 MOA red dot and a 65 MOA circle, Solar Failsafe and a titanium hood — with the HM3X 3x flip-to-side magnifier, both on Picatinny mounts, in one box. UPC 605930625721.
It is the complete close-and-far rifle setup: run the HS510C at 1x with both eyes open for speed, then flip the HM3X into place behind it for 3x when you need to identify or reach something further out, and swing it aside again without breaking position. Solar Failsafe tops up the CR2032 in daylight and keeps the dot lit if the cell dies, Shake Awake powers the optic down when it sits still and wakes it the instant it moves, and the reticle switches between the 2 MOA dot, the 65 MOA circle and the circle-dot at the press of a button. Buying the pair together costs less than the two separately.
How It Compares
The two items are also sold on their own: the HS510C red dot sight and the HM3X 3x magnifier. For a green reticle, the HE510C green dot sight takes the same magnifier. For a lighter, cheaper combination, the HS403C and HM3X combo uses a 20 mm micro dot instead. For a titanium magnifier, see the HM3XT titanium 3x magnifier. Browse all red dot and magnifier combos and every red dot sight magnifier we stock.
Ideal For
- Civilian Service Rifle and practical rifle on straight-pull AR-pattern carbines
- Practical shotgun and 3-Gun, where the 65 MOA circle drives fast close hits
- Shooters buying a first red dot and magnifier setup as a matched pair
- Deer stalking and vermin control where quarry must be identified before the shot
Key Features
-
Sight: HS510C open reflex red dot sight with a wide field of view
-
Reticle: red Multi-Reticle System — 2 MOA dot, 65 MOA circle, or circle-dot
-
Magnifier: HM3X 3x on a flip-to-side quick-detach mount
-
Electronics: Solar Failsafe supplemental power plus Shake Awake motion activation
-
Battery: CR2032 in the HS510C
-
Housing: aluminium HS510C with a titanium protective hood
-
Mounting: both units fit a standard Picatinny rail
-
Illumination: multiple daylight settings plus night-vision compatible settings
Technical Specifications
| Kit Contents |
HS510C red dot sight and HM3X 3x magnifier |
| Optic Type |
Open reflex red dot sight plus flip-to-side magnifier |
| Magnification (Magnifier) |
3x |
| Reticle |
Multi-Reticle System — 2 MOA dot and 65 MOA circle |
| Reticle Colour |
Red |
| Illumination |
Multiple daylight settings, night-vision compatible settings included |
| Power |
Battery with Solar Failsafe supplemental power |
| Battery |
CR2032 |
| Housing |
Aluminium HS510C with titanium hood |
| Magnifier Mount |
Flip-to-side, quick detach |
| Adjustment |
Windage and elevation |
| Mount Compatibility |
Picatinny rail |
| MPN / UPC |
HS510C+HM3X / 605930625721 |
What's Included
- Holosun HS510C red dot sight with integrated Picatinny mount
- Holosun HM3X 3x magnifier with flip-to-side quick-detach mount
- Lens cloths, multi-tools and user manuals
Warranty
Covered by Holosun's manufacturer warranty, handled in the UK by Xtreme Tactical.
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Holosun's warranty.
Frequently Asked Questions
What is included in the Holosun HS510C and HM3X combo?
The Holosun HS510C and HM3X Combo includes the HS510C open reflex red dot sight with its integrated Picatinny mount and the HM3X 3x magnifier on its flip-to-side quick-detach mount, supplied together in one box.
Why buy the combo instead of the sight and magnifier separately?
The Holosun HS510C and HM3X Combo costs less than buying the two items individually, and the sight and magnifier are already matched to work together on the same rail.
What reticle options does the HS510C in this combo have?
The HS510C uses the Multi-Reticle System, which switches between a 2 MOA red dot for precision, a 65 MOA circle for speed, and both together as a circle-dot, changed at the press of a button.
Can the magnifier be moved out of the way?
Yes. The HM3X in the Holosun HS510C and HM3X Combo sits on a flip-to-side quick-detach mount, so it swings aside for unmagnified 1x shooting or comes off the rail entirely.
What do Solar Failsafe and Shake Awake do on the HS510C?
Solar Failsafe uses a solar panel to supplement power and keeps the dot lit even if the CR2032 fails. Shake Awake powers the optic down when it is idle and reactivates it the moment it senses movement, which is what extends the battery life so far.
What rail does the Holosun HS510C and HM3X combo need?
Both the sight and the magnifier mount to a standard Picatinny rail, so the rifle needs enough continuous rail length to take the sight with the magnifier behind it.
