1x32 Ventilated Rib Shotgun Sight Collimator Fiber Optic Circle Dot Sight with Replaceable Red/Green Fiber Optic

1x32 Ventilated Rib Shotgun Sight： Replaceable Red & Green & Yellow Fiber Optic for Quick Target Acquisition. Mounts onto a Shotgun's Ventilation Rib Eliminating the Need for a Rail, the Vent Rib Must be at Least 2mm High and Should Measure Between 5.5mm and 10 Mm in Width. The 32mm Large Objective Lens with Fully Coated Film Can Provide a Wide Field of View. Uses Ambient Light Via Fiber Optic For Reticle Projection, Requires No Batteries, Just Good Light Conditions. Shockproof, Weatherproof, Suitable For Any Weather Conditions. Durable Aluminum Alloy Construction in Black Matte Finish. Package Includes: Optic, Mounting Hardware. How to adjust the 1x32 Ventilated Rib Shotgun Sight？ Adjustable POI with included hardware. The front center grub screws are used to adjust the point of impact. Tightening the front will lower the Point Of Impact, and tightening the rear will raise the Point Of Impact. You can use the included wrench to adjust the red dot's Windage and Elevation (up, down, left, and right).