Vortex Defender-ST

SKU:DFST-MRD3

$249.49 USD

~~$299.99 USD~~ $249.49 USD

Sale Sold out

Reticle Size & Color 3 MOA Red 6 MOA Red 3 MOA Green

$10 off with the purchase of a LowPro™ mount, FREE shipping, & no sales tax outside of Georgia. Discounts are automatically applied at checkout.

The Vortex Defender-ST red dot is a versatile, mid-size pistol optic designed to strike the ideal balance between speed, durability, and everyday usability. Positioned between the compact CCW and oversized XL models, it offers a “just right” form factor with a generous viewing window that enhances target acquisition and tracking without adding unnecessary bulk. A crisp 3 MOA or 6 MOA dot provides flexibility for precision or fast shooting, while multiple brightness settings—including night vision compatibility—ensure clear visibility in any lighting condition. Built from rugged aluminum with an aggressively textured front face for one-handed slide manipulation, the Defender-ST is engineered to withstand hard use in defensive, duty, or range environments. With intuitive controls, long battery life, and Vortex’s lifetime warranty backing it, the Defender-ST delivers a durable, user-friendly red dot solution that performs reliably when it matters most.

Key features

Large Viewing Window
For fast target acquisition and large field of view.

Aspherical Lens
For a distortion-free sight picture and truer colors.

ShockShield™ Polymer Insert
To protect against hard, daily abuse.

Fast-Rack™ Textured Grip
Aggressive texturing on face of optic for racking slide off any surface.

Motion Activation with 10 Minute Auto-Shutoff
Automatically activates with motion while 10 minute auto-shutoff saves battery life.

Button Lockout
Prevents accidental brightness adjustment during use or transport.

Top Mount Battery
Easy battery changes without having to re-zero your optic.

10 Daylight Bright Brightness Settings
Daylight bright, illuminated center dot aids in faster center-point acquisition in bright daylight conditions.

Night-Vision Compatibility
The lowest 2 settings are night-vision compatible.

Parallax Free
All red dots 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.

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.

Waterproof
Designed to withstand harsh weather conditions.

Fogproof
Designed to withstand a wide range of temperatures.

Shockproof
Designed to withstand the highest levels of recoil and impact.