XS Sights DXW Big Dot Night Sights — Fits Smith & Wesson Pistols — Black with Green Tritium Front & White Outline / White Stripe Rear (SW-0019S-3 / 647533036337)
Enhance your accuracy and confidence in any light condition with the XS Sights DXW Big Dot Night Sights for Smith & Wesson pistols. These premium sights combine a highly visible green tritium front sight surrounded by a white outline, paired with a white stripe rear sight, to deliver the fastest target acquisition possible — day or night. Designed for defensive shooters and law enforcement professionals, the XS SW0019S3 Big Dot sights help you stay on target when it matters most.
Optimized for Speed and Visibility
The DXW Big Dot Night Sight system is engineered for defensive accuracy at close to medium ranges, where fast sight alignment is critical. The large, highly visible front sight draws your eye instantly to the center of your target, while the rear sight’s vertical white stripe helps align the front dot in the “dot-the-i” sight picture.
The result is a sight picture that’s simple, intuitive, and extremely fast to acquire — even under stress or low-light conditions. Whether you’re responding to a threat or training for defensive shooting, the XS Big Dot system offers unbeatable visibility and performance.
Green Tritium for 24/7 Target Acquisition
The green tritium insert in the front sight provides continuous glow without batteries or maintenance, ensuring visibility in complete darkness. Surrounded by a bright white ring, it remains easy to pick up in daylight, dusk, and low-light environments.
This combination of tritium and high-contrast coloring makes the XS DXW Big Dot one of the most versatile sight systems available — ideal for concealed carry, duty pistols, and home defense firearms.
Durable, Low-Profile Design
Constructed from machined steel, these night sights are built to endure the harshest conditions while maintaining zero. The low-profile rear sight minimizes snagging on clothing, holsters, or gear — perfect for concealed carry or tactical applications. The rugged black finish resists corrosion, scratches, and daily wear, ensuring your sights stay reliable and functional through years of hard use.
Easy “Dot-the-I” Alignment System
Unlike traditional three-dot sights that require precise horizontal alignment, the XS Big Dot system uses a vertical alignment method. Simply “dot the i” by placing the glowing front dot directly above the white rear stripe — it’s that easy.
This design eliminates guesswork, enabling faster target acquisition under high stress and in real-world defensive scenarios where fine motor skills may be compromised.
Key Features
Brand: XS Sights
Model: DXW Big Dot Night Sights
Model Number: SW-0019S-3
UPC: 647533036337
Fit: Smith & Wesson handguns (verify your specific model for compatibility)
Front Sight: Green tritium with white outline (Big Dot design)
Rear Sight: White stripe, non-tritium
Finish: Black, matte corrosion-resistant steel
Shooting Method: “Dot-the-I” vertical alignment
Purpose: Defensive carry, duty use, low-light shooting
Compatibility
The XS Sights DXW Big Dot Night Sights are designed to fit select Smith & Wesson pistols, including popular models in the M&P and other compatible series. Always confirm fitment before installation or consult a qualified gunsmith for proper mounting.
Installation and Maintenance
Installation is straightforward but should be performed by a qualified gunsmith for optimal alignment and retention. Once installed, these sights require minimal maintenance: simply wipe clean after range sessions or environmental exposure. The tritium insert is self-illuminating and will maintain brightness for years without the need for batteries or external light charging.
Ideal For
Defensive & concealed carry shooters
Law enforcement professionals
Home defense setups
Low-light and night shooting environments
Shooters seeking faster, clearer target acquisition
Why Choose XS Sights Big Dot
XS Sights is a trusted name in firearm optics and sight systems, renowned for its innovation in fast-acquisition sight designs. Their Big Dot series revolutionized sight alignment with simplicity, durability, and real-world practicality. Every XS sight is proudly made in the USA, machined from premium materials, and tested to meet the demands of professionals and responsible armed citizens alike.
When you choose the XS DXW Big Dot Night Sights, you get:
Unmatched speed and visibility under all lighting conditions.
A rugged steel build that withstands recoil and wear.
A simple, intuitive alignment method perfect for high-stress situations.
Long-lasting tritium illumination for true 24-hour readiness.
Summary
Upgrade your Smith & Wesson pistol with the XS Sights DXW Big Dot Night Sights (SW-0019S-3 / 647533036337) for superior performance in both daylight and darkness. With its bold green tritium front sight, intuitive “dot-the-i” alignment, and rugged steel construction, this sight system gives you the visibility, speed, and confidence you need to perform when it matters most.
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