The 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 photo luminescent 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.

FITS: Colt 1991 Series. TRITIUM-PHOSPHOR LAMP: Tritium-filled glass lamp provides superior illumination in no light or low light settings. "U" NOTCH REAR SIGHT: Specifically designed rear notch enhances front sight acquisition. SUBDUED REAR SIGHT: Angled and serrated surface to reduce glare, and black painted rings to enhance focus on front sight. HIGH VISIBILITY COLORED FRONT SIGHT POST: Glow-in-the-dark photoluminescent paint aids visibility and quicker target acquisition in transitional light.

Night vision: Yes. Mounting Type: Cantilever Mount. Material: Rubber. Item Weight: 0.1 Pounds. Sport Type: Tactical. Item Dimensions LxWxH: 7 x 7 x 1 inches. Color: Orange. Brand: Trijicon. Date First Available: March 29, 2013. Best Sellers Rank: #468,821 in Sports & Outdoors. Customer Reviews: 4.3 out of 5 stars 12 ratings 4.3 out of 5 stars. : B00C1KFW0K. Sport Type: ?Tactical. Included Components: ?Night Sight Set. Part Number: ?CA101O. Manufacturer: ?Trijicon. Number of Items: ?1. Suggested Users: ?Unisex-adult. Material: ?Rubber. Color: ?Orange. Model Name: ?CA101O. Brand Name: ?Trijicon. Item Weight: ?0.1 Pounds. Item Dimensions LxWxH: ?7 x 7 x 1 inches. Package Weight: ?0.1 Pounds. Item Package Dimensions L x W x H: ?6.3 x 5.9 x 0.4 inches.