HolosunRed Dot Sight Magnifier
Holosun HM3XT 3x Magnifier QD Flip-to-Side Mount Black
- Magnification
- fixed 3x with a 22 mm objective
- Housing
- titanium — lighter and more durable than the aluminium HM3X
- Mount
- quick-detach flip-to-side mount with co-witness spacer for absolute or lower 1/3
- Focus
- adjustable dioptre
In stock — 7–10 business day delivery
Tracked delivery, estimated 7–10 working days
Want to know when it's back? Email us and we'll let you know
Multi-buy savings
Mix any optics and lights — applied automatically
- 5%2 items
- 10%3 items
- 15%4 or more
Applied automatically at checkout — no code needed. Accessories such as tailcaps, switches and mounts aren't included.
Complete your setup
- Shipped from the UK with tracked delivery
- 30-day returns on unused items
- Warranty support — contact us first
Delivery
Every order is shipped from the UK with tracked delivery. Estimated delivery time is 7–10 working days, and you will receive tracking details by email as soon as your order is on its way.
Returns
Unused items in their original packaging can be returned within 30 days. Email info@opticstrader.co.uk first and we will confirm the return details.
Warranty
Every product is new and boxed. If anything goes wrong, contact us first and we'll help with a manufacturer warranty claim where one applies.
The Holosun HM3XT 3x Magnifier (HM3XT) is a fixed 3x flip-to-side magnifier with a 22 mm objective in a titanium housing, on a quick-detach flip-to-side mount with a co-witness spacer. It measures 3.4 in (86 mm) and weighs 9 oz (255 g).
A magnifier does not have a reticle of its own — it sits behind a red dot or holographic sight and magnifies whatever that sight is already projecting, so one optic covers both close work at 1x and target identification at distance. The HM3XT is the titanium version of the HM3X: identical 3x optics, in a housing that is lighter and tougher than the aluminium original. It flips aside in an instant for unmagnified shooting, has an adjustable dioptre for a sharp picture, and is water and fog resistant with windage and elevation adjustment for aligning it to the sight in front.
How it compares
The aluminium version, the HM3X 3x magnifier, has the same optics for less. For more magnification, the HM6X 6x magnifier steps up, and the HM3X-Micro 3x magnifier is the smaller lower-1/3 option. Pair it with a wide-window sight such as the HS510C red dot sight or the enclosed HE512T red dot sight, or buy a sight and magnifier together from our red dot and magnifier combos. Browse all red dot sight magnifiers.
Ideal for
- Weight-conscious rifle builds that still want a magnifier behind the dot
- Civilian Service Rifle and practical rifle on straight-pull AR-pattern carbines
- Positive target identification at distance without giving up 1x speed up close
- Deer stalking and vermin control where a dot alone is not enough to identify quarry
Key features
- Magnification: fixed 3x with a 22 mm objective
- Housing: titanium — lighter and more durable than the aluminium HM3X
- Mount: quick-detach flip-to-side mount with co-witness spacer for absolute or lower 1/3
- Focus: adjustable dioptre
- Alignment: windage and elevation adjustment to align with the sight in front
- Eye Relief: 2.75 in (70 mm)
- Field of View: 7°
- Sealing: water and fog resistant
| Type | Flip-to-side magnifier for red dot and holographic sights |
| Magnification | 3x (fixed) |
| Objective Lens | 22 mm |
| Eye Relief | 2.75 in (70 mm) |
| Field of View | 7° |
| Mount | Quick-detach flip-to-side, absolute and lower 1/3 via included spacer |
| Adjustment | Windage and elevation, plus adjustable dioptre |
| Housing | Titanium |
| Sealing | Water and fog resistant |
| Length | 3.4 in (86 mm) |
| Weight | 9 oz (255 g) |
| MPN | HM3XT |
Does the Holosun HM3XT have its own reticle?
No. The Holosun HM3XT 3x Magnifier has no reticle of its own — it magnifies the reticle projected by the red dot or holographic sight mounted in front of it.
What is the difference between the Holosun HM3XT and the HM3X?
The optics are identical 3x. The Holosun HM3XT has a titanium housing, which is lighter and more durable, while the HM3X is aluminium and more affordable.
Will the Holosun HM3XT work with my red dot sight?
The Holosun HM3XT pairs with most red dot and holographic sights at a compatible mount height. The included spacer supports both absolute and lower 1/3 co-witness, so the magnifier can be matched to the height of the sight in front of it.
Can the Holosun HM3XT be moved out of the way?
Yes. The Holosun HM3XT sits on a quick-detach flip-to-side mount, so it swings clear for unmagnified 1x shooting and can be removed from the rail entirely with the QD lever.
Does the Holosun HM3XT have a dioptre adjustment?
Yes. The Holosun HM3XT has an adjustable dioptre, so the image can be brought into sharp focus for the individual shooter's eye.
Is the Holosun HM3XT weatherproof?
The Holosun HM3XT is water and fog resistant, in a titanium housing measuring 3.4 in (86 mm) and weighing 9 oz (255 g).
Every order is shipped from the UK with tracked delivery, with an estimated delivery time of 7–10 working days. Unused items in their original packaging can be returned within 30 days for a full refund.