BSA 20mm Stealth Tactical Red, Green and Blue Illuminated Dot Sight with Laser and Flashlight: * Features: * Black matte finish * Multi-purpose "twist-cap" technology * 5/8" Weaver-style rail * Illuminated red, green and blue dot * Metal ammo box * Laser sight and flashlight included * Magnification: 1X * Object lens diameter: 0.79mm * Field of view at 100 yds: 44 * Parallax setting: 50 yds * Click adjustment value: 1/4 * Adjustment range: 30-30 * Weight: 1.7 lbs * Dimensions: 7.5"L x 5.3"W x 3.1"H * Model# STSRGBD20LL