Aim-O M4 Red/Green Dot With Laser

Aim-O M4 Red/Green Dot With Laser Aluminum Construction 1X magnification 5 Adjustable Brightness Levels (Red & Green) Integrated Laser Unit for Rapid Target Acquisition With Scope Cover Fit to Mount on 20mm Picatinny Rail System Handguard Waterproof, anti-fog and shockproof Fully Adjustable Windage and Elevation Length: 140mm