Mini Red Dot Sight Collimator for Glock / Rifle Reflex Sight Scope Fit 20mm

Features     Made of tough aircraft grade aluminum     Versatile mounting platforms     Lightning fast target acquisition     Unmatched durability     Adjustable reticle brightness Specifications     Suitable for: Glock 17 19, 20mm guide rail     Material: Aluminum alloy     Magnification: 1X     Reticle Color: Red     Mode: 1 MOA dot     Battery: 1x CR2032     Size: 1.8"x1.2"x1"     Sight Window: 0.87"x0.63" Items Included     One (1) Red Dot Sight     One (1) 20mm Bracket     One (1) Glock Base (28.5mm)     Two (2) CR2032 Battery (one Installed)     Allen Key     Cleaning Cloth     Carrying Case     Users Manual