Co-witness - JP Enterprises Red Dot Sights - JPoint 4 MOA Dot Sight

This is my first red dot sight. Purchased for and mounted on a S&W 9mm C.O.R.E. (4 1/2"). I selected this sight mostly because of the price - and most reviews said it worked fine. I found the mounting to be quick & simple, and adjustment easy as well. I would have preferred more features (on/off, & manual adjustment capability), and the ability to change the battery w/o removing the sight, but those features came at a high price on other sights. I am happy so far, and the sighting seems to work well. Have probably shot 200 rounds.