Holosun HM3X-FDE 3x Mangifier/Flip & QD mount – FDE
- Rugged aluminium 3× magnifier designed for red dot sight enhancement
- Ambidextrous flip-to-side mount with quick-release Picatinny attachment
- Compatible with absolute and lower-1/3 co-witness heights (spacer included)
- IP67 water-resistant construction for all-weather reliability
- 2.75" eye relief with bright optics and 75% light transmission
The Holosun HM3X-FDE is a rugged 3× magnifier engineered to enhance the performance of your red dot sight by providing increased target identification and extended engagement capability. Housed in durable aluminium with an MAO surface finish and styled in Flat Dark Earth, it delivers a premium balance of clarity, reliability, and ease of use.
Designed for versatility, the HM3X features an ambidextrous flip-to-side Picatinny mount with a quick-release mechanism, allowing rapid transitions between magnified and unmagnified views. Holosun includes a spacer to ensure compatibility with both absolute and lower-1/3 co-witness heights, making it suitable for a wide range of red dot systems. With a generous 2.75" eye relief, 3× optical magnification, and IP67 environmental sealing, the HM3X-FDE is built to perform in demanding conditions. Windage and elevation adjustments enable precise alignment with your optic, while a built-in flat driver tool ensures easy on-the-go tweaks.
A simple, battery-free design guarantees consistent operation, making the HM3X-FDE an excellent choice for shooters seeking dependable magnification in a tough, mission-ready package.
- Power Source N/A
- Battery Type N/A
- Battery Life N/A
- Window Size N/A
- Dimensions 3.9 × 1.7 × 2.5 in
- Weight 9.8 oz
- Housing Material Durable Aluminium
- Surface Finish MAO
- Adjustment per Click N/A
- W&E Travel Range N/A
- Storage Temperature -21°C to 60°C
- Working Temperature -21°C to 60°C
- Submersion Rating IP67
- Vibration Resistance 1000G
- Transmittance 75%
- Field of View 7°
- Eye Relief 70 mm
- Exit Pupil 7.6 mm
- Magnification 3×
- Digital Zoom N/A
- Diopter N/A
- Durable Aluminium Housing: Strong, lightweight construction with MAO finish for long-term resistance to wear and environmental exposure.
- Flip-to-Side Mechanism: Instantly transition between magnified and unmagnified views with an ambidextrous flip design suited to both left- and right-handed shooters.
- Quick-Detach Picatinny Mount: Secure QD attachment allows fast installation and removal without tools.
- Height Compatibility Spacer: Included spacer supports absolute and lower-1/3 co-witness setups for maximum red dot compatibility.
- Bright, Clear Optics: Offers excellent clarity, 75% transmittance, and a comfortable exit pupil for enhanced visual performance.
- Precision Alignment: Integrated windage and elevation adjustments allow the magnifier to be perfectly aligned with your red dot’s point of aim.
- Generous Eye Relief: 70 mm of eye relief ensures comfortable and consistent positioning, even during dynamic shooting.
- No Battery Required: Fully optical system with no electronics, ensuring fail-proof reliability.
- IP67 Water Resistance: Ready for harsh field conditions, including rain, dust, and brief submersion.
- Built-In Adjustment Tool: Flat driver tool integrated into the design for convenient, tool-free adjustments.
- Holosun HM3X-FDE 3x Mangifier/Flip & QD mount – FDE
- HOLOSUN Limited Lifetime Warranty
Tactical Scope Shipping Policy
Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.
Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.
DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY – READ MORE: HERE
Note: The above DPD link is to our group partner site Optics Warehouse, with whom we share logistics and stock. Link opens in a new window.
Couriers
We use DPD, Royal Mail, TNT, and UPS courier services for all our UK and international orders. Once your order is dispatched, you will receive an email with your unique tracking number.
In-Store Items
These are items we have in stock and aim to dispatch within 1–2 working days. During busy periods, this may be delayed slightly. If you'd prefer to collect your item in person, please contact us in advance to arrange. Collection orders must be paid for beforehand.
Pre-Order Items
Pre-order items are typically out-of-stock or in limited supply. Purchasing a pre-order secures your item, and it will be dispatched within 24 hours of restock where possible. Check the product page for estimated restock dates. These dates may change, so staying in touch is advised.
International Delivery & Taxes
If your shipping address is outside the UK, you may incur import duties or taxes upon arrival in your country. These charges are your responsibility. Customs regulations vary, so please check with your local customs office. Some packages may be opened for inspection.
Need Help?
If you need assistance, call us at +44 (0)1803 611895 (Optics Warehouse) or email [email protected].
DPD Shipments & PIN Code Delivery
We have now introduced DPD Pin Code verification for all orders shipped via DPD. You will receive a PIN via email and text.
A valid email and mobile number must be provided at checkout. Emails will come from Riviera House 3PL. Please check spam/junk folders if not received.
Failure to present your PIN to the delivery driver will result in a failed delivery and rescheduling may be required.

