Trijicon Bright & Tough Night Sights feature a shock-resistant design and lamps capped with sapphire jewels to help evenly distribute the light while still providing resistance to solvents to the lamp. The lamps are also cushioned with silicone rubber and are contained within aluminum cylinders for additional protection.
This model has a true Novak rear sight and fits models 4506, 4526, 4546, 4566, 4576, and 4586.