Hi I was wondering about a decent site for my mossberg 500 after about 200 rounds through it, I have recently purchased an ATI stock. My next purchase is going to be a site for quick aim. I am fair shot at 15-25 yards but when I do shoot at that range I have to take time with the bead site, I was actually considering a ghost ring site but I don't think that is available for the 500. So I just wanted to hear input on which people prefer and if they have had improvement in there target practice. If really appreciate it.