Vortex Defender-ST 3 MOA Green Dot

The Vortex Defender-ST 3 MOA Green Dot is the all-purpose green dot sight built for handguns, shotguns, and offset on a carbine. Whether you’re running drills at the range or holding the line in demanding duty scenarios, this rugged optic delivers the toughness, accuracy, and adaptability your world demands. The bright green dot cuts through varied lighting and backgrounds, helping you lock onto targets with speed and confidence.

Designed as a true 1x sight, the Defender-ST keeps both eyes open for rapid target acquisition, with a large viewing window that frames the scene while your dot remains centered and precise. The 3 MOA dot size is optimized for fast holdovers at close range and accurate hits at mid-range, making this a versatile choice for duty use, personal defense, and competitive shooting alike. The all-green dot and holographic-style performance are tuned to deliver reliable performance under a variety of conditions, including bright daylight and dim indoor environments.

Durability and reliability are at the core of the Defender-ST. Its ShockShield polymer insert protects against daily abuse, while high-contrast, low-glare matte black anodization helps camouflage your position in the field. The optic is built to withstand the rigors of real-world use—from recoil and impact to harsh weather—thanks to waterproof O-ring seals that prevent moisture, dust, and debris from penetrating the enclosure and fogproof design that keeps the reticle crisp across temperature swings. This is a duty-grade optic designed to perform when it matters most.

Every function on the Defender-ST is engineered for fast, instinctive operation. The fast-rack texturing on the face of the optic provides secure grip for racking a slide from any surface, while motion activation with a 10-minute auto-shutoff conserves battery life without sacrificing readiness. A button lockout helps prevent accidental brightness adjustments during transport or in the holster, while the top-mount battery system lets you swap batteries quickly without re-zeroing your sight. The result is a reliable sight that stays ready in the field, on the range, or in competition.

Key design choices support rapid response in dynamic scenarios. The Defender-ST features ten daylight brightness settings to ensure a bright, highly visible dot in sunlight, with the two lowest settings compatible with night vision for operations in low-light environments. Parallax is effectively minimized across all green dot and holographic sights, so you’ll enjoy a negligible difference in accuracy as you move your head or eyes. The unlimited eye relief means you can place your eye anywhere along the optic’s axis for quick, natural aiming, even if your stance or mounting height shifts during a drill or engagement.

For shooters prioritizing mission-focused reliability, the Defender-ST is built with a single-piece chassis that keeps weight to a minimum without sacrificing rigidity. It’s compact (1.83 inches in length) and lightweight (about 1.48 ounces), making it an unobtrusive companion on pistols, shotguns, or carbines. The rugged construction is matched by practical specifications that matter in real-life use: a 3 MOA green dot for fast targeting, 1x magnification for true sight picture, unlimited eye relief, and parallax-free operation that translates to dependable accuracy when it’s needed most.

• Mounting footprint: DeltaPoint Pro compatible for broad mounting versatility
• Dot size: 3 MOA Green Dot for rapid acquisition
• Color and reticle: Bright Green Dot, 1x magnification
• Battery: CR2032; run time of approximately 25,000 hours
• Brightness: 10 daylight brightness settings with night-vision compatibility on the two lowest levels
• Performance: Parallax-free design with unlimited eye relief
• Durability: Waterproof O-rings, fogproof, and shockproof construction
• Protection: ShockShield polymer insert to withstand daily abuse
• Controls: Fast-Rack texturing and Button Lockout to prevent accidental changes
• Battery access: Top-mounted battery for easy changes without rezeroing
• Dimensions and weight: Length 1.83", Weight 1.48 oz
• Included in the box: Picatinny mount, custom tool, rubber cover, most common mounting screw sets, CR2032 battery, lens cloth, Glock MOS plate

The Defender-ST is not just another optic; it’s a practical tool designed to complement your technique in high-pressure situations. Its rugged, low-profile build makes it compatible with a wide range of firearms and configurations, from duty pistols to home-defense setups, and even offset carbine arrangements where quick target confirmation is essential. The green dot’s visibility remains crisp in bright daylight and remains usable in dim conditions thanks to a tunable brightness system and an eye-friendly reticle that reduces fatigue during extended sessions.

With a focus on reliability, the Defender-ST blends essential features that shooters rely on: parallax-free performance that minimizes awareness of the sight, unlimited eye relief to accommodate diverse mounting heights and shooting styles, and a robust, weather-sealed housing that stands up to rain, dust, and cold. The 25,000-hour battery life means fewer battery changes at the range or on duty, allowing you to focus on your training or mission rather than constant maintenance.

If you’re looking for a versatile green dot sight that excels in fast-moving scenarios, the Defender-ST delivers. It’s a compact, lightweight, and durable solution that enhances accuracy at close range while staying dependable across lighting conditions and weather. Whether you’re optimizing competition speed, expanding your duty rig, or equipping a carbine for dynamic engagements, this optic keeps pace with your demands.

Upgrade your aiming speed and precision today with the Vortex Defender-ST 3 MOA Green Dot. Explore its protective features, battery efficiency, and rugged construction to see how it can fit into your firearms setup and training routine. Ready to sharpen your edge? Add the Defender-ST to your kit and experience rapid target acquisition across environments, then step up your accuracy wherever your next drill or assignment takes you.