Vortex Defender-ST Micro Red Dot - Tan + Atrius Development 3 Position Super Selector Safety

ortex Defender-ST Micro Red Dot

Introducing the Vortex Defender-ST 3 MOA Red Dot DFST-MRD3, your ultimate companion for all shooting pursuits, from handguns to shotguns and beyond. Designed to meet the demands of any shooting scenario, this versatile optic is equally at home in your everyday carry setup or mounted on your shotgun for those intense turkey hunts. The Defender-ST features a large ultra-clear window, perfectly sized for a smooth draw out of concealment and wide enough to quickly acquire the dot on fast-moving targets. Loaded with ShockShield technology, this red dot is built to withstand hard, daily abuse, ensuring durability in the field. Equipped with motion activation and a 10-minute auto-shutoff feature, the Defender-ST is always ready when you are, conserving battery life for extended use. Its large hard-coated aspherical lens delivers a distortion-free sight picture and truer colors, enhancing your shooting experience. With a DeltaPoint Pro footprint, the Defender-ST is compatible with a wide range of firearms, offering unmatched versatility. If you’re in search of a durable and adaptable red dot that meets all your shooting needs, look no further than the Vortex Defender-ST.

Vortex Defender-ST Features
• 3 MOA Red Dot
• Large Fully Coated Aspherical Lens
• 10-Minute Auto Shutoff
• Shocksheild Polymer Insert
• Deltapoint Pro Footprint

In the Box
• Vortex Defender-ST 3 MOA Red Dot DFST-MRD3
• Glock MOS Adapter Plate
• Picatinny Mount
• Rubber Cover
• Lens Cloth
• CR2032 Battery
• Custom Tool
• Common Mounting Screws

Atrius Development 3 Position Super Selector Safety

Upgrade your AR-15 with the Atrius Development 3 Position Super Selector Safety, the ultimate forced reset selector that delivers unmatched control and performance. Engineered for tactical enthusiasts seeking precision and speed, this robust safety switch transforms your firearm into a versatile tool for any scenario, allowing seamless transitions between safe, semi-automatic, and super-semi modes without compromising reliability.

Key Features

• Three-Position Functionality: Easily switch between SAFE for secure handling, traditional SEMI for accurate single shots, and SUPER-SEMI for rapid forced reset fire that maximizes your rate of fire legally.
• Mil-Spec Compatibility: Designed to integrate flawlessly with standard AR-15 fire control groups chambered in .223, 5.56, or .300 BLK—no modifications required for most setups.
• Drop-In Installation: Swap out your factory safety in minutes with minimal tools; some minor fitment may be needed due to receiver tolerances.
• Ergonomic Design: Textured and chamfered levers provide quick thumb access, even under high-stress conditions, ensuring intuitive operation.
• Ultra-Smooth Engagement: Crisp 90-degree throw with tactile clicks and positive detents to prevent slippage and maintain control during operation.

Specifications

• Material: Heat-treated 4140 steel with corrosion-resistant finish for enduring durability against environmental wear.
• Weight: 0.2 oz—lightweight addition that doesn’t add unnecessary bulk to your build.
• Dimensions: 5″ L x 4″ W x 1″ H, compact for seamless integration into your AR-15 lower receiver.
• Throw Angle: 90 degrees for reliable, mechanical leveraged action that reduces component stress.
• Manufacturing: Proudly made in the USA, ensuring high-quality standards and robust construction.

Why Choose the Atrius Super Selector Safety

In the world of tactical firearms accessories, reliability and speed are paramount. Traditional selectors limit your options, but the Atrius 3 Position Super Selector addresses common pain points like sluggish resets and inconsistent performance. Its mechanically leveraged design minimizes wear on your rifle’s internals, extending the life of your fire control group compared to other forced reset systems. Whether you’re training at the range or preparing for defensive scenarios, this selector empowers you with enhanced firepower control, solving the frustration of slow follow-up shots and giving you confidence in every engagement. Built to withstand rain, mud, and sweat, it’s the durable upgrade that serious shooters demand.

Ready to elevate your AR-15’s capabilities? Integrate the Atrius Development 3 Position Super Selector Safety today and experience the difference in precision, speed, and control that turns standard setups into high-performance machines.

Frequently Asked Questions

1. Is the Atrius Super Selector compatible with my AR-15 trigger?
Yes, it works with mil-spec triggers featuring a squared-off trigger bar. Ensure your fire control group meets these specs for optimal performance; aftermarket triggers may require verification.

2. Does installation require any modifications to my firearm?
No major modifications are needed—it’s a drop-in replacement for your factory safety. However, due to varying receiver tolerances, minor fitment adjustments might be necessary.

3. Why might the selector not sit perfectly flush with the receiver?
This is normal and due to manufacturing tolerances in lower receivers. The Atrius design prioritizes function over aesthetics, ensuring secure operation without impacting reliability.

COMPATIBILITY NOTICE:

• Certain platforms, such as AR9 variants, may require professional gunsmithing to ensure proper function of the selector lever.

• Firearms modified to “Super Safety” specifications may not be compatible with components designed for our FRS system, as the Atrius Safety Device features a solid lever cam design.

• The Super Safety system incorporates a 15-degree tolerance due to its dovetail construction, which may allow for limited over-travel before the cam surface disengages from the trigger bar.

Selector Screw and Torque Spec: T10 screw, 4/40 thread, selector spring. We recommend 15 in/lbs with blue loctite only.

Please Note: This Atrius FRS will not work with AR-10(LR308)/SR-25 platforms without significant gunsmithing. In the near future we will be coming out with a model specifically catered to these platforms.

Important: All modifications should be performed by a qualified gunsmith. Improper installation or unauthorized modification may result in malfunction or unsafe operation. Use and modify at your own risk. The manufacturer assumes no liability for damages or injuries resulting from incorrect installation or use outside of intended specifications.

Additional compatibility concerns should be addressed here.