C-MORE Systems Serendipity Red Dot Sight with Standard Switch (Frame Width: .830-Inch) Olive<br />http://www.amazon.com/gp/product/B00D4L367Q?tag=sukses2015-20<br />Heads Up Display for Fastest Target Acquisition <br />Super Bright Red Dot with Adjustable Intensity and Interchangeable Dot Module <br />Infinite Adjustment for Windage and Elevation Featuring Positive Locking Screws <br />Polymer Body Standard Intensity Switch Dial Rheostat <br />Integral Mount for Standard STI and Infinity SV Frame Width 830