SKU#DFST-MRD3 Vortex

Vortex Defender-ST™ 3 MOA Micro Red Dot

Name: Vortex Defender-ST™ 3 MOA Micro Red Dot
Brand: Vortex
Price: 314.99 GBP
Availability: InStock

2 in stock

The Vortex Defender-ST 3 MOA Micro Red Dot Sight is a rugged, duty-ready reflex optic built for pistols, shotguns, and carbine offset setups where speed and durability matter most. Its crisp 3 MOA dot provides a strong balance of fast target acquisition and precise aiming, while the large aspherical lens delivers a clear, distortion-free sight picture with unlimited eye relief. Motion activation automatically powers the optic on when movement is detected, with a 10-minute auto shutoff to preserve battery life. Built from a tough 7075 aluminum body with ShockShield™ polymer reinforcement, it’s designed to handle hard recoil and everyday abuse. With multiple brightness settings, waterproof and fog-proof sealing, and a top-loading battery that avoids re-zeroing, it’s a reliable, no-nonsense red dot backed by Vortex’s lifetime warranty.

-Nathan (Technical Advisor)

VIEW PRODUCT INFO / SPECS

Select Reticle: 3 MOA

3 MOA

6 MOA

Whilst we aim to dispatch in-stock items within 1 working day, please be aware that during busy periods dispatch of in-stock items may be delayed by up to 2 working days. Authorised UK Retailer

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Vortex Defender-ST™ 3 MOA Micro Red Dot

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Founded in Devon in 2007, Optics Warehouse has grown to become the UK’s largest specialist optics retailer, offering an unrivalled selection of rifle scopes, thermal imagers, night vision, binoculars, red dots, mounting systems and shooting accessories from the world’s leading brands, all backed by competitive pricing, expert advice and outstanding customer service.

Shaun Ellis, Managing Director Long range target shooting and deer stalking.

Product Information FIND OUT MORE

DESCRIPTION

The Vortex Defender-ST™ 3 MOA Micro Red Dot is your ultimate companion for handguns, shotguns, or offset on a carbine. Engineered to excel in rigorous environments, this versatile optic embodies toughness, accuracy, and adaptability, meeting the demands of your challenging world head-on.

With a 1x magnification and a 3 MOA Defender Dot reticle, the Defender-ST™ ensures precise targeting, whether you're running drills at the range or facing intense duty situations. Its robust design boasts a shock-absorbing polymer insert protecting its 7075 aluminum body, guaranteeing resilience against everyday abuse.

Equipped with Motion Activation and a 10-minute Auto-Shutoff feature, this red dot sight conserves battery life while offering instant readiness when needed. The Fast-Rack™ Texturing facilitates quick slide manipulation, ensuring seamless operation in any scenario.

Featuring a large, distortion-free sight picture thanks to its Large Hard Coated Aspherical Lens, the Defender-ST™ offers 10 daylight-bright brightness settings, including two night vision compatible settings for low-light conditions. Its waterproof, fogproof, and shockproof construction ensures reliable performance in any environment.

With an easy top-mount battery change system and a DeltaPoint® Pro footprint, this optic offers hassle-free maintenance and compatibility with a range of platforms. Finished in a low-glare matte black anodized coating, it blends seamlessly with your firearm while providing corrosion resistance.

With the Vortex Defender-ST™ 3 MOA Micro Red Dot, you'll experience unparalleled performance and versatility, ensuring rapid target acquisition and precision in any situation, day or night.

SPECS

Magnification 1x
Reticle 3 MOA Defender Dot
Adjustment Graduation 1 MOA
Parallax Setting Parallax Free
Max Windage Adjustment 145 MOA
Max Elevation Adjustment 115 MOA
Dot Color Red
Dot Size 3 MOA
Mounting Footprint DeltaPoint® Pro
Eye Relief Unlimited
Length 1.83"
Weight 1.48 oz

FEATURES

Footprint: DeltaPoint® Pro
Large Hard Coated Aspherical Lens: Large Distortion Free Sight Picture.
Motion Activation With 10 minute Auto-Shutoff: Automatically activates with motion while 10 minute auto-shutoff saves battery life.
ShockShield™: Polymer insert absorbs shock to the 7075 aluminum body protecting it for everyday abuse.
Fast-Rack™ Texturing: Aggressive texturing on face of optic for racking slide off any surface.
Top Mount Battery: Easy battery change without having to rezero your optic.
10 Daylight Bright Brightness Settings: Daylight bright, illuminated center dot aids in faster centerpoint acquisition in bright daylight conditions.
Parallax Free: All red dot and holographic sights will exhibit some small amount of parallax. Matching current industry practice, this small amount would be considered “parallax free” and will make a negligible difference in performance.
Unlimited Eye Relief: Non-critical eye relief for rapid target acquisition.
Night-Vision Compatibility: The lowest 2 settings are nightvision compatible.
Waterproof: O-ring seals prevent moisture, dust, and debris from penetrating for reliable performance in all environments.
Fogproof: Designed to withstand a wide range of temperatures.
Shockproof: Rugged construction withstands recoil and impact.
Low-Glare Matte Black Anodized: Corrosion and wear-resistant anodization provides low-glare matte surface and helps camouflage the shooter’s position.
Single-Piece Chassis: Compact and lightweight.

RETICLE

WHAT'S IN THE BOX

Vortex Defender-ST™ 3 MOA Micro Red Dot
Glock MOS Adapter Plate
Picatinny Mount
Rubber Cover
Lens Cloth
CR2032 Battery
Custom Tool
Most Common Mounting Screw Sets

FREQUENTLY ASKED QUESTION(S)

1. What does the 3 MOA dot mean?
It means the dot covers roughly 3 inches at 100 yards, offering a balance of precision and speed for defensive and range use.

2. What firearms is it compatible with?
It is designed for handguns, shotguns, and offset carbine mounting applications.

3. What mounting footprint does it use?
It uses the DeltaPoint Pro footprint, which is compatible with many modern pistol slides.

4. Does it have motion activation?
Yes, it automatically turns on with movement and shuts off after inactivity to save battery life.

5. How durable is it?
It features a 7075 aluminum body with ShockShield™ polymer reinforcement for recoil and impact resistance.

6. Is the glass clear?
Yes, it uses a hard-coated aspherical lens for a distortion-free sight picture.

7. Is it good for low light use?
Yes, it includes multiple brightness settings, including night-vision compatible modes.

8. How long does the battery last?
Battery life is long-term, with motion activation helping extend runtime significantly.

9. Is it waterproof and fog-proof?
Yes, it is sealed for reliable performance in harsh weather conditions.

10. Does it come with a warranty?
Yes, it is covered by Vortex’s unconditional lifetime VIP warranty.

WARRANTY

Vortex VIP Lifetime Warranty

DELIVERY & RETURNS

Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.

Please Note: Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.

Please Note: DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY - READ MORE: HERE

COURIERS

We use DPD , RoyalMail, TNT and UPS courier services for all our orders whether dispatching to the UK or International. As soon as your order has been dispatched you will receive an email with your unique tracking number. We are unable to add delivery notes to your order regarding safe spaces or neighbour deliveries. If you require this service it can be arranged directly with the courier once the parcel is in their network.

IN-STORE ITEMS

These are items that we have in-stock and will be sent out for delivery as soon as possible. We aim to dispatch all orders within 1-2 working days, but during busy periods dispatch may be delayed by a day or so. If you would like to purchase the item in person then please call ahead to arrange an appointment: 01803 611 895.

PRE-ORDER ITEMS

These are usually items that are going to be out-of-stock for a number of weeks or are in short supply. By purchasing a Pre-Order Item you are in effect paying a deposit for your goods. As soon as the item is back in stock yours will be dispatched within 24 hours where possible. Please see individual product pages for current back-in-stock dates. In rare occasions, these dates can be changed by the manufacturers so we recommend staying in contact with Optics Warehouse depending on the product lead time.

INTERNATIONAL DELIVERY & TAXES

In addition to the above information If your delivery address is outside of the UK you may be subject to import duties and taxes, which are levied once a shipment reaches your country. Any such additional charges for customs clearance must be borne by you. You should note that customs policies vary widely from country to country. Optics Warehouse advises each customer to contact their local customs office for further information if they are in any way unsure of local duties or liabilities. Cross border shipments are subject to opening and inspection by customs authorities which means some packages may be opened and re-sealed.

NEED HELP?

If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk

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A NOTE ABOUT DPD SHIPMENTS:

Please be advised that we have now introduced DPD Pins to all DPD orders from Optics Warehouse.
If your shipment is being sent from Optics Warehouse via DPD you will be sent a Pin Code that must be shown to the courier upon delivery.
The pincode is sent VIA email & TEXT message. A valid email address and mobile number must be provided at checkout. Emails will be sent from "Riviera House 3PL" - if you do not receive this email please check your junk or spam folders.
Please note that if you do not display your pin code to the courier driver upon delivery, you will not be able to have your item and you may need to schedule another delivery date to show a valid pin.
Please view the attached slides HERE for further information!

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