-Features:
-compatibility with Aimpoint® sights and for maximum flexibility and increased performance in the field. 
-The 3XMag is a revolutionary tool for military personnel, law enforcement, sport shooters and hunters.
-The versatile 3XMag also can be used as a handheld magnifying glass monocular for discrete observation and identification.
-No influence on point of impact -- No need for re-zeroing the sight
-The mount can be removed quickly by pressing a knob and twist counter-clockwise.

-Specification:
-System: Magnifying Module
-Magnification: 3X 
-Eye relief : at 5° FOV 40 - 90 mm at full FOV 60 - 65 mm 
-Length : 110 mm (4.3\")
-Width/height : 44x41 mm (1.7\" x 1.6\")
-Ring width : 30mm
-Weight : 200 g (7,1 ounces) inc rubber cover