XS Sight Systems DXT2 Pro Big Dot Tritium Pistol Sight S&W M&P & M2.0 Shield Front/Rear Black Green Green. DXT2 PRO Series Big Dot sights drive focus to the front sight using an industry-leading large high-contrast front and a low-profile V-notch rear. DXT2 PRO Series Big Dot front sights use a glow dot that absorbs light and glows in low light levels before it is dark enough to see the tritium. The increased surface area of the convex dot increases light absorption intensifying the charge of the glow properties of the dot. The aluminum-sleeved tac lamp tritium insert improves upon our already tough-as-nails front sight. The dot-the ''i'' sight picture with a tritium dot in the front sight and a tritium bar in the rear prevents confusing the front and rear sight in high-stress situations. In most gunfights the victim and attacker are both moving and the victim's focus is drawn to the threat. The wide field of view increases visibility of the front sight and the threat downrange. Both sights feature a BlackNitride finish for enhanced corrosion resistance and durability. Outside Diameter Big Dot 0.188''; fits in common holsters. Do not use sight press/pusher tool. Fits Glock models 17 19 22 23 24 26 27 31 32 33 34 35 36; Taurus G3c GX4 and new production G3; Tisas Duty PX-9; Walther PDP and new production CCP M2. Features of XS Sight Systems DXT2 Pro Big Dot Tritium Pistol Sight Steel sight with Black Nitride finish Tactical Lamp for increased durability Green photoluminescent ring front Snag-free design Limited Lifetime Warranty Package Contents: XS Sight Systems DXT2 Pro Big Dot Tritium Pistol Sight XS Sight Systems SW-X202S-5G: DXT2 Pro Big Dot Tritium Pistol Sight S&W M&P & M2.0 Shield Front/Rear Black Green Green