TRUGLO TFO TRITIUM AND FIBER-OPTIC HANDGUN SIGHTS: The TruGlo TFO Handgun Sight combines fiber-optic sights and tritium night sights to create a bright picture - day or night! TruGlo patented combination of tritium and fiber-optic technologies unites the best of both worlds - providing the same bright sight picture whether you are in glaring daylight or complete darkness. This TruGlo Front and Rear Sight Set is compatible with Sig Sauer Handguns. MAIN FEATURES: - Combining tritium and fiber-optic illumination; - Assembled in U.S.A. with quality Swiss tritium; - Glows in the dark - no batteries, light exposure required; - Concealed fiber cannot be seen by the target; - FORTRESS FINISH nitride protective coating; - Snag-resistant design; - Fits most standard holsters; ABOUT TRUGLO: TRUGLO is the leading manufacturer of fiber-optic sights, tritium handgun sights, and shooting accessories for bows, crossbows, and handguns. We're a Texas company. Inherently, that means we like our guns, and slinging lead a long way. From target archery and crossbow hunting to carry pistols and tactical competition, TruGlo has accessories to improve your gear. Regardless of your outdoor sporting interest, we have gear that's optimized for your style and budget.