TRIJICON HD Orange Night Sight For H&K 45C, 45C Tactical (HK111O). Glow-in-the-dark photoluminescent paint aids visibility and quicker target acquisition in transitional light. Angled and serrated surface to reduce glare, and black painted rings to enhance focus on front sight. Specifically designed rear notch enhances front sight acquisition. Protective Clear Coat – Specifically designed rear notch enhances front sight acquisition. Tritium-filled glass lamp provides superior illumination in no light or low light settings. Protective Aluminum Cylinders – Contains and protects the tritium gas filled lamps from heavy recoil and harsh cleaning solvents. Sapphire Window – Each Trijicon tritium lamp is capped with a sapphire jewel which helps to evenly distribute the light from the tritium lamp as well as protect it from solvents and puncture. Each sight is manufactured to fit specific handgun makes and models. Silicone Rubber Cusion – Gives additional shock-protection to tritium-filled glass lamps within the aluminum housing. Tritium lamp is warrantied to illuminate for 12 years from date of original manufacture. The Trijicon HD Night Sights were specifically created to address the needs of tactical shooters. The three-dot green tritium night sight set’s front sight features a taller blade and an aiming point ringed in photoluminescent paint while the rear sight is outlined in black and features a wider U-shaped notch. This unique configuration increases visibility and quickens front sight acquisition – even in transitional lighting. Additionally, the front surface of the rear sight is steeply hooked to assist in emergency one-handed slide operation. Our normal hours of operation are Monday through Friday 8am – 6pm CST. Gritr 7901 Boulevard 26, Suite 200 North Richland Hills, TX, 76180. We are open to the public. Dear Customer: After the Supreme Court’s ruling on South Dakota vs. Gritr is committed to compliance with these new regulations. If you have any questions about this new policy, please contact the Department of Revenue office in your state. We apologize for any inconvenience.