TruGlo Tritium Pistol Night Sight Glock 9/40 TG. Durable CNC-machined steel protects the tritium lamps on these Tritium Pistol Sights from TruGlo. The brightest tritium available glows naturally on TruGlo Tritium Night Sights. Depend on TruGlo Green Tritium Pistol Sights in low light conditions even in the coldest weather. Specifications for TruGlo Tritium Pistol Night Sight: Manufacturer: TruGlo Color: Black Front Sight Color: Tritium Green Rear Sight Color: Tritium Green Fabric/Material: Steel Country of Origin: USA Features of TruGlo Brite Site Tritium Handgun Night Sights: Tritium night sights advanced technology utilizes the self-illuminating power of tritium. Uses the brightest tritium available. Sights transition from standard white dot sights during the daylight to glowing green dots in the the dark. Unmatched visibility in low-light conditions. CNC machined steel construction. Green front and rear. Always on and never off. No batteries required. Long lasting and not affected by temperature extremes. Perfect for all shooting conditions. Fits standard holsters. Snag-resistant design. All metal sights. Package Contents: TruGlo Tritium Brite Site Pistol Night Sight Sets TruGlo TG-TG231G1: Tritium Pistol Night Sight Glock 9/40