Holosun HM3XT 3x Magnifier QD Flip-to-Side Mount Black
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The Holosun HM3XT is a fixed 3x magnifier in a titanium housing, carried on a flip-to-side quick-detach mount for use behind a red dot or holographic sight.
Same 3x optics as the aluminium HM3X, in titanium: the housing is the reason to pay the difference, not the glass.
The body measures 3.2 in overall (3.2 x 1.8 x 2.5 in) and weighs 11.6 oz, finished in black and sealed to IPX67. Eye relief is 70 mm (2.75 in) with a 7 degree field of view. Windage and elevation adjust in 0.5 MOA clicks across a range of plus or minus 50 MOA, and the dioptre gives plus or minus 3 dioptres of focus.
A magnifier carries no reticle. It sits behind the sight and enlarges the dot or ring that sight is already projecting, so the zero belongs to the optic in front and nothing changes when the magnifier is flipped out of the way. That flip is the whole point: 1x for close targets, 3x for identification, without touching a magnification ring or losing the sight picture. It has to be matched to the height of the optic ahead of it, so confirm that height before ordering.
Any Picatinny rail with clearance behind the sight, at a height that matches the optic in front of it. The aluminium version of the same optic is the HM3X, the smaller body is the HM3X Micro, and for more reach the HM6X at 6x is the step up.
| Type | Flip-to-side magnifier for red dot and holographic sights |
|---|---|
| Magnification | 3x fixed |
| Eye relief | 70 mm (2.75 in) |
| Field of view | 7 degrees |
| Adjustment | 0.5 MOA per click, plus or minus 50 MOA |
| Dioptre | Plus or minus 3 dioptres |
| Mount | Flip-to-side quick-detach |
| Housing | Titanium, black |
| Sealing | IPX67 |
| Dimensions | 3.2 x 1.8 x 2.5 in |
| Weight | 11.6 oz |
| MPN | HM3XT |
The titanium option for a build where the magnifier has to survive as much as it magnifies. Order the HM3XT today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Red Dot Magnifiers, Holosun HM3X or browse all Holosun.
| Brand | Holosun |
|---|---|
| Part no. | HM3XT |
| Category | Magnifier |
| Barcode | 810047071150 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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