When or if you decide to buy a PF9, You will need to do some site work. The windage is easy. but a shim will be needed to elevate the sight. if you are use to shooting S&W, You will find that you will be shooting low with Kel Tec. I will let you know what I have placed as a shim in the future. I assume, at least .032 to start with. I also have purchased the laser sight. Seams like putting a dress on a pig. But Will prove it's self shooting varments in the backyard at night.::sarcastic: