This very versatile unit is a red dot with the capability to switch from 1x to 2x, by simply adding or removing its special eyepiece. Furthermore it also comes with a dual base that is suitable for Weaver / Picatinny rail on the smaller 3/8" rail
 
Removable 2x magnification lens
30mm objective lens
Multi coated optics
Parallax free at 100 yds
7 position illumination
Dual mount suitable for 11mm dovetail rails & weaver style rails.
 
TECHNICAL DATA
Model: Sight-Pro DUAL
Diameter: 30mm
Length: 145mm-5.71”
Weight.: 274g-9.67 Oz
Dot size: 4 M.O.A.