-Weight:285g-Gross Weight:375g-Color:Black-3X Power Mag-Material:full metal-Made in China-The included mount for the magnifier is the twist mount, which allows for quick attachment and detachment. -The mount fits any MIL-Std Picatinny Rail.-System: Magnifying Module-Magnification: 3X-Eye relief : at 5° FOV 40 - 90 mm at full FOV 60 - 65 mm-Mountable on a rail system behind holographic sights-Extremely fast and ingenious mounting solution (twist mount - Picatinny)-Can also be mounted with a regular 30 mm ring-Provides extended range to the operator-Combines the best of two worlds - CQB & semi-sniping-Increases confidence, performance and flexibility-No influence on point of impact -- No need for re-zeroing the sight-Doubles as handheld magnifying monocular-Twist mount and flip up dust cover included.-Depending on platform, might need 1/2" riser to level magnifier with some Holo sights