Holosun HS510C Red Dot Sight & HM3X 3x Magnifier Combo Multi-Reticle System Solar Failsafe
£489.99
Skip to product information
Holosun HS510C Red Dot Sight & HM3X 3x Magnifier Combo Multi-Reticle System Solar Failsafe
£489.99
At a glance
- Sight type
- Open reflex
- Reticle
- Multi-reticle
- Fits
- Rifle
- Power
- Solar failsafe
- Delivery within 10 business days
- Estimated delivery:
- 30-day returns
- UK-based specialist support
- Pay in 3 interest-free payments of £163.33 with Klarna
Bundle & SaveAdd more, save more
- Save 5% Any 2 items
- Most PopularSave 10% Any 3 items
- Save 15% Any 4+ items
Applied automatically at checkout to any mix of products in your cart.
Details
Description
One box, both halves of a close-and-distance rifle setup: the Holosun HS510C Red Dot Sight with the HM3X 3x magnifier to sit behind it. Work the HS510C's wide open window at 1x with both eyes open, flip the HM3X in when you need 3x to identify or engage something further out, then swing it clear and you are back to 1x.
How It Compares
Already own a magnifier, or only want the optic? The HS510C is sold on its own, as is the HM3X. Other matched pairs live in red dot & magnifier combos, and choosing a red dot magnifier walks through what to look for.
Ideal For
- Rifles that have to cover close targets and distant ones
- AR-15 and carbine builds
- Buyers who would rather not match components themselves
- Lower-1/3 co-witness setups
What's Included
- Sight: Holosun HS510C — large open reflex with the Multi-Reticle System, Solar Failsafe, Shake Awake and a QD co-witness mount
- Magnifier: Holosun HM3X — 3x on a flip-to-side QD mount, ±3 diopter
Technical Specifications
- SKU / MPN / UPC: SKU 510C+HM3X / MPN 510C+HM3X / UPC 605930625721
Why buy from Red Dot Sight UK
A UK specialist in red dot sights, holographic sights and magnifiers from Trijicon, EOTech, Holosun and SIG Sauer — genuine optics, secure checkout and UK-based support.
The detail
Technical Specifications
| Sight type | Open reflex |
|---|---|
| Dot colour | Red |
| Reticle | Multi-reticle |
| Fits | Rifle |
| Power | Solar failsafe |
| Brand | Holosun |
| Type | Red Dot Sight |
| SKU | 510C+HM3X |
Fitment
Compatibility
Mounting Footprint
Confirm the optic's footprint matches your firearm's cut or plate.
Rail Compatibility
Pair with a matching Picatinny mount for rifle and carbine platforms.
Always confirm your firearm's optic cut or rail matches the footprint before purchase. Our guide to red dot sight footprints explains how to match an optic to your firearm. If unsure, contact our team for fitment advice.
Help & guidance
Product FAQs
How does the magnifier work in the HS510C and HM3X combo?
The HM3X flips in behind the HS510C for 3x and swings aside when you want 1x, with no tools and nothing to remove. That lets you run the wide open window at 1x with both eyes open and add magnification only when you need it.
Is a mount included for the sight in this combo?
Yes, the Holosun HS510C comes on its own quick-detach co-witness mount and the HM3X has its flip-to-side QD mount. Both halves arrive ready to fit.
Can I buy the HS510C and HM3X separately instead?
Yes, both the HS510C and the HM3X are listed individually. This combo simply boxes the two together so you do not have to match components yourself.
What reticle does the sight in the HS510C and HM3X combo use?
The HS510C uses Holosun's Multi-Reticle System, so you can change the reticle to suit the distance you are shooting. It also has Solar Failsafe and Shake Awake.
What magnification does the HM3X in this combo give?
The Holosun HM3X gives 3x magnification behind the HS510C. It sits on a flip-to-side QD mount and has plus or minus 3 diopter adjustment.
What rifles is the HS510C and HM3X combo aimed at?
This combo suits rifles that have to cover close targets and distant ones, including AR-15 and carbine builds. It is set up for lower one-third co-witness.
Exactly what is in the box with the HS510C and HM3X combo?
The box contains the Holosun HS510C large open reflex sight with Multi-Reticle System, Solar Failsafe, Shake Awake and a QD co-witness mount, plus the Holosun HM3X 3x magnifier on its flip-to-side QD mount.
Does the HS510C in this combo have Shake Awake and Solar Failsafe?
Yes, the HS510C supplied in this combo has both Solar Failsafe and Shake Awake. It is the large open reflex version with a quick-detach co-witness mount.
Can the HM3X be adjusted to my eyesight?
Yes, the HM3X magnifier in this combo has plus or minus 3 diopter adjustment. That lets you bring the image into focus for your own eyes.
How long will the HS510C and HM3X combo take to arrive?
Estimated UK delivery is 10 business days. It ships as genuine UK stock, so there are no import fees to pay on arrival, and checkout is secured by Shopify.
No questions match your search.
Further reading
Guides picked for this optic - the brand range, the format, and how to set it up.
You may also like
Recently Viewed
Keep browsing
Shop Related Categories
Buy with confidence
Shipping, Returns & Warranty
Orders are dispatched from the UK. Full details, options and timescales are on our shipping policy.
If something isn't right, our returns policy explains how to arrange a return or exchange.
Every order is covered by our 30-day returns policy and your statutory consumer rights. Some products are also supplied with a manufacturer warranty; that cover is provided by the manufacturer rather than by Red Dot Sight UK and varies by brand.