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The XS Sight Systems 24/7 Big Dot Tritium Express Set is designed for Sig P239 Pistol. XS Express Sights are made for fast sight acquisition in all light conditions. Sights feature a low profile, snag free design and are easily installed. Includes a Tritium green dot front and a white vertical line rear sight. Tritium inserts are surrounded by a thin white line for enhanced use in daylight, Big Dot versions have a larger white outline on the front sight surrounding the tritium insert. The rear sight does not contain a tritium insert.

Specifications:

- Compatibility:Sig P239 Pistol
- Fast Sight Acquisition In All Light Conditions
- Low Profile
- Snag Free Design
- Easily Installed
- Tritium Green Dot Front
- White Vertical Line Rear Sight
- Made In USA