Night Fision Tritium Front Ring Sight for Walther PPQ/PPQ M2 w/ Yellow Ring Black. Like all night sights Night Fision uses self-illuminating Tritium to get the "always on" glow that makes them so effective. Night Fision sights have 30percent more Tritium than most sights on the market. The Tritium insert isnt surrounded by a painted-on ring but rather one made of a daylight fluorescing material that produces optimum visibility in daylight. Night Fision sights provide maximum visibility in both nighttime AND daylight conditions so when the pressure is on youll locate your sights more quickly and get them on target - fast. A new mounting system holds the Tritium vial more securely to protect it from the ravages of unexpected knocks and dings. Specifications for Night Fision Tritium Front Sight for Walther PPQ/PDP/PPQ M2: Manufacturer: Night Fision Gun Make: Walther Gun Model: Walther PPQ M2 Walther PPQ Sight Style: U-Notch Fabric/Material: CNC Machined Front Material: Fluorescent Gun Type: Pistol Illumination Type: Tritium Brightness Settings: 1 Finish: Black Nitride Features of Night Fision Tritium Front Sight for Walther PPQ/PDP/PPQ M2 Brightest Tritium sights on the market Front sight is brighter than rear encouraging instinctive "Front Sight Focus" to keep your eyes on the target Rugged machined steel sight bodies Matte black Nitride finish - excellent wear- and corrosion-resistance Variety of front dot colors and rear notch configurations to choose from Industry leading 16-year brightness guarantee Compatible with Walther PDP and PPQ handguns Package Contents: Night Fision Tritium Front Sight for Walther PPQ/PDP/PPQ M2 Allen Wrench Night Fision WAL-275-001-YGXX: Tritium Front Ring Sight for Walther PPQ/PPQ M2 w/ Yellow Ring Black