C-MORE Systems Tactical Railway Red Dot Sight with Standard Switch Heads Up Display for Fastest Target Acquisition Super Bright Red Dot with Adjustable Intensity and Interchangeable Dot Module Infinite Adjustment for Windage and Elevation Featuring Positive Locking Screws Aluminum Body, Standard Intensity Switch (Dial Rheostat) Attaches to AR15 Style Flattop Rail, Iron Sight Co-Witness Capable