This is a High Quality Very Solidly Built replica scope, Illuminated Red Dot Sight with 7 Brightness Settings each.

They use a standard AA Battery

There is an integrated 20mm mount so they fit straight onto the weaver rails

Material: Aluminum alloy

Net Weight: 0.413kg

Shockproof,waterproof,fogproof

Magnification: 1X

Battery: 1* AA (Not included)

Fit for 20mm rail