553 Metal Holographic Red/Green Dot Sight Scope

About this item Lens material: clear multi-coated glass (waterproof, fog, shockproof, high light transmission); body material: aluminium alloy; length: 97 mm Mounted on a standard RIS rail, 1 inch weaver or Picatinny rail (mill spec 1913), 20 mm rail Adjustment: wind speed and height 0.5 MOA (1 click = 1/2 MOA) Brightness adjustment button ‘up’ brightens more; brightness adjustment button ‘down’: more dimmers; press both buttons at the same time: turn off the power