3 DOT HD NS ONG GLK 10MM/45ACP GL104O | 20,21,29,30,36 & 41 Manufacturer Model Number: GL104O Manufacturer: Trijicon Model: Trijicon HD Night Sight Set Type: Accessory-Lasers and Sights Item Type: Accessory Finish: Black Sights: Orange Front and Black Rear Shipping Weight: 0.1 Feature: For Glock Models: 20,21,21SF Feature: 29,30,36, and 41 Optic Adjustable Objective: false Optic Reticle Illuminated: false