Red/green dot sight w.21mm mount

Rugged 30m red-dot sight constructed in anodized aluminum with a black rubberized coating, featuring a highly visible dual color “Dot in Circle” reticle with 5-level adjustable brightness, as well as fully adjustable windage and elevation. It can be used on any Airsoft gun with a 21 mm standard rail, and if mounted on a M4/AR15 its height is perfectly centered allowing unobstructed use of the fixed sights. The button type battery is store in an easily accessible compartment. With screw off caps that protects the windage and elevation dials.
Solid integrated mounting bracket with heavy duty tension discs attaches to any standard 21mm picatinny /Weaver accessory rail.
Color: Black.
  
Features:

• Red and Green “Dot in Circle” reticle.
• Fully adjustable windage and elevation.
• 5 level adjustable brightness.
• 21mm integrated mounting bracket.

  
Uses one CR2032 battery. (not included.)