Vortex Defender-ST™ – 3 MOA Green Dot Micro Sight (DFST-MGD3)
The Defender-ST is Vortex’s all-purpose micro green dot for handguns, shotguns, and offset carbine use — built for drills on the range and hard duty cycles alike. This listing is the 3 MOA bright green configuration: 1x magnification, unlimited eye relief, approximately 1.48 oz with battery, and a DeltaPoint® Pro mounting footprint. Vortex part number DFST-MGD3, UPC 843829145800. This listing is for the green 3 MOA Defender-ST only.
Green Dot, Duty-Sized Window
A 3 MOA bright green center dot rides behind a large viewing window for fast acquisition and a wide field of view. Vortex lists 12 brightness settings — 10 daylight-bright and 2 night-vision compatible — so you can keep the dot readable from noon sun to NV.
Built to Take Abuse
- ShockShield™ polymer insert to protect against hard daily abuse.
- Fast-Rack™ textured face for racking a slide off a belt, boot, or barricade.
- Motion activation with 10-minute auto-shutoff (when auto-shutoff is enabled).
- Button lockout to stop accidental brightness changes.
- Top-mount CR2032 battery so you can change power without breaking zero.
- Low-glare matte black anodized single-piece chassis; waterproof, fogproof, and shockproof per Vortex.
Adjustments and Footprint
Turrets adjust in 1 MOA clicks (25 MOA per rotation), with up to 115 MOA elevation and 145 MOA windage travel. The sight uses the DeltaPoint® Pro footprint and ships with a Picatinny mount, Glock MOS plate, common screw sets, and tools.
Vortex Defender-ST Specifications
| Manufacturer | Vortex Optics |
| Model | Defender-ST Micro Green Dot, 3 MOA |
| Part Number | DFST-MGD3 |
| UPC | 843829145800 |
| Magnification | 1x |
| Reticle | 3 MOA Bright Green Dot |
| Eye Relief | Unlimited |
| Parallax | Parallax Free |
| Adjustment Graduation | 1 MOA |
| Travel Per Rotation | 25 MOA |
| Max Elevation Adjustment | 115 MOA |
| Max Windage Adjustment | 145 MOA |
| Illumination Settings | 12 (10 Daylight, 2 NV) |
| Battery | CR2032 |
| Battery Run Time | 25,000 hrs @ setting 6 (constant on, auto-shutoff disabled) |
| Mounting Footprint | DeltaPoint Pro |
| Length | 1.8" |
| Width | 1.2" |
| Height | 1.2" |
| Weight | Approximately 1.48 oz (with battery) |
| Finish | Low-glare matte black anodized |
| Warranty | Vortex VIP Unconditional Lifetime Warranty |
What’s Included
- Picatinny Mount
- Custom Tool
- Rubber Cover
- Most Common Mounting Screw Sets
- CR2032 Battery
- Lens Cloth
- Glock MOS Plate
Frequently Asked Questions
What footprint does this Defender-ST use?
Vortex publishes the DeltaPoint® Pro mounting footprint for this sight. Confirm your slide cut or adapter plate before mounting.
Can I change the battery without losing zero?
Yes. Vortex lists a top-mount battery so you can swap the CR2032 without removing the optic from the firearm.
How many brightness settings are there?
Vortex lists 12 settings: 10 daylight-bright and 2 night-vision compatible.
What is the published weight?
Approximately 1.48 oz with battery, per Vortex’s product manual.
Is this the green 3 MOA Defender-ST?
Yes. This listing is for part DFST-MGD3 / UPC 843829145800 only — the green 3 MOA Defender-ST configuration.
Internal Reference:
DFST-MGD3
Barcode:
843829145800
| Brand: Vortex |
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