The better you can see your sights, the better you can shoot. TruGlo brought fiber-optics to the shooting sports industry decades ago for this very reason. TFO pairs their fiber-optic sights with our tritium night sights to create a consistently bright sight picture day or night! The 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. Excludes .22 Compact and C.O.R.E. Models. Product Features Nitride Fortress Finish Duty Proven CNC-Machined 24/7 Brightness