C-MORE Systems Tactical 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 Polymer Body, Standard Intensity Switch (Dial Rheostat) Attaches to Colt M-16/AR-15 Rifles and Carbines, Including the M-4, With a Flat Top Upper Receiver