MBUS 3 REAR SIGHT BLK Manufacturer Model Number: MAG1167-BLK Manufacturer: Magpul Model: MBUS 3 Rear Sight Type: Accessory-Lasers and Sights Item Type: Accessory Finish: Black Shipping Weight: 0.104 Feature: Fits M1913 Picatinny Rail Feature: Tool-Less Windage Adjust Feature: Ambidextrous Deployment Optic Adjustable Objective: false Optic Reticle Illuminated: false