Trijicon bright & tough night sights present three-dot iron sights that enhance accuracy In night-fire shooting by up to five times compared to conventional sights. Remarkably, they Achieve this accuracy at the same speed as intuitive shooting, all without the need for batteries. Encased within a metal body and shielded by silicone rubber, bright & tough night sights exhibit a distinctive shock-resistant construction. Each lamp boasts a sapphire jewel cap for uniform light distribution and to safeguard against solvents and puncture. The lamps are further safeguarded within aluminum cylinders and situated on silicone rubber cushions to endure shock and substantial recoil. Green lamps are covered by a 12 years warranty starting from the date of manufacture.