XS Sights R3D 2.0 Night Sights for Glock 21 – Green Tritium Front

The XS Sights R3D 2.0 night sight set delivers 24/7 visibility with a green tritium front sight and blacked-out rear for fast target acquisition in any light condition. The high-contrast front sight draws the eye immediately, while the wide U-notch rear speeds sight alignment under stress. Designed for Glock 21 pistols chambered in .45 ACP.

CNC-machined from steel with a durable Fortress Finish coating, these sights install directly into factory dovetails with minimal fitting. The tritium front lamp is protected by an orange photoluminescent glow ring that charges in ambient light for additional visibility at dusk and dawn. The rear sight's shallow V-notch provides a clear, uncluttered sight picture for defensive and duty use.

• Type: Night Sight Set (Front + Rear)
• Tritium Color: Green
• Rear Sight: Blacked-Out with White Stripe
• Front Sight Accent: Orange Photoluminescent Ring
• Notch Style: Wide U-Notch Rear
• Material: Steel with Fortress Finish
• Installation: Factory Dovetail (Minimal Fitting Required)
• Compatible Firearms: Glock 21
• SKU: XSGL-R202P-6G