Vortex Defender-ST Micro Red Dot Sight (Black, 3 MOA Dot)

BH #VODFSTMRD3 • MFR #DFST-MRD3
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Vortex Defender-ST Micro Red Dot Sight (Black, 3 MOA Dot)
Key Features
  • Large Hard-Coated Aspherical Lens
  • Motion Activated, 10-Minute Auto Shutoff
  • Fast-Rack Texturing
  • 10 Daytime, 2 NV Brightness Settings
Equally at home on duty and at the range, the Vortex Defender-ST Micro Red Dot Sight is designed to be tough, fast, and accurate in competition shooting. The 3-MOA dot illuminates in eight daytime brightness levels and two that are compatible with night vision gear. The aspherical lens offers a distortion-free, virtually parallax-free sight picture with unlimited eye relief. Aggressive texture on the face of the sight allows you to rack your slide against any surface. The Defender-ST is motion-activated and shuts off automatically after 10 minutes. The battery installs on the top, so you don't have to re-zero your optic when replacing it (which won't happen often, considering the battery's 25,000-hour lifespan.)
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Vortex Defender-ST Overview

Equally at home on duty and at the range, the Vortex Defender-ST Micro Red Dot Sight is designed to be tough, fast, and accurate in competition shooting. The 3-MOA dot illuminates in eight daytime brightness levels and two that are compatible with night vision gear. The aspherical lens offers a distortion-free, virtually parallax-free sight picture with unlimited eye relief. Aggressive texture on the face of the sight allows you to rack your slide against any surface. The Defender-ST is motion-activated and shuts off automatically after 10 minutes. The battery installs on the top, so you don't have to re-zero your optic when replacing it (which won't happen often, considering the battery's 25,000-hour lifespan.)

  • Large 0.9"-wide hard-coated aspherical lens provides a distortion-free sight picture.
  • Motion activation and 10-minute auto shutoff, which saves battery life.
  • ShockShield polymer insert absorbs shock to the 7075 aluminum body, protecting it from everyday abuse.
  • Fast-Rack aggressive texturing on face of optic enables racking slide off any surface.
  • Top mount battery allows for easy battery changes without having to re-zero.
  • Ten daylight-bright illumination levels aid in faster center-point acquisition in bright daylight conditions, plus two night-vision-compatible settings.
  • Non-critical eye relief allows for rapid target acquisition.
  • Waterproof with O-ring seals to prevent moisture, dust, and debris from penetrating for reliable performance in all environments.
  • Fog-resistant design withstands a wide range of temperatures.
  • Rugged construction withstands recoil and impact.
  • Low-glare, matte-black anodized, corrosion- and wear-resistant finish helps camouflage the shooter's position.
  • This sight features a compact, lightweight single-piece chassis.
UPC: 843829133296

Vortex Defender-ST Specs

Key Specs
Reticle
3 MOA Dot
Reticle Color
Red
Power Source
1 x CR2032
Runtime
25,000 Hours
Mounting
Leupold Delta Point Pro
Magnification
1x
General
Reticle
3 MOA Dot
Reticle Color
Red
Eye Relief
Unlimited
Power Source
1 x CR2032
Runtime
25,000 Hours
Sight Window Dimensions
0.9 x 0.8" / 23 x 20 mm
Mounting
Leupold Delta Point Pro
Quick Release
No
Optics
Magnification
1x
Impact Point Correction
145 MOA (Elevation) / 115 MOA (Windage)
Adjustment per Click: 1 MOA
Physical
Environmental Resistance
Water-Resistant (Unrated)
Fogproof
Yes
Materials
Aluminum
Dimensions
L: 1.8" / L: 45.7 mm
Weight
1.48 oz / 42 g
Packaging Info
Package Weight
0.635 lb
Box Dimensions (LxWxH)
5.6 x 4.6 x 2.7"

Vortex Defender-ST Reviews

Great dot great deal

By Owen
Rated 5 out of 5
Date: 2025-08-08

Best price anywhere!! Great product!

Great optic

By Austin
Rated 5 out of 5
Date: 2025-05-21

Great red dot. I have use vortex sights in the past and am always happy with the quality of there products. B and H has a great price and their shipping is very fast. Will definitely use B and H in the future.

See any errors on this page?

Will the Defender-ST Micro fit on a Ruger SR9?

Will the Defender-ST Micro fit on a Ruger SR9?
Asked by: Pete
The Vortex Defender-ST Micro Red Dot Sight (3 MOA Dot), BH # VODFSTMRD3, employs a standard ‎picatinny rail mount and a variety of mounting screws hardware that should be compatible with a Ruger SR9 handgun.
Answered by: Mark S
Date published: 2025-10-19

Is this the same as ...

Is this the same as https://vortexoptics.com/defender-st-enclosed-solar-micro-red-dot+reticle-Multi-Reticle~Enclosed ?
Asked by: Voltaire
No, the Vortex Defender-ST Micro Red Dot Sight (Black, 3 MOA Dot) (BH #VODFSTMRD3 • MFR #DFST-MRD3) is not the same sight as the MFR# DFST-MRD3-E in the "Vortex Optics" link. ---------------------------------------------------------------------------------------------------------------- The DFST-MRD3-E is the upgraded version of the sight with a dual solar/battery power system and selectable multi-reticle options, while the DFST-MRD3 is the standard model with only a battery and a single 3 MOA dot choice.
Answered by: Leonard E
Date published: 2025-09-26
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