The rear sight was tight before putting 150 .45 230 fmj rounds through it and when I stripped it down for cleaning I noticed the rear sight would wobble up and down and side to side on the dovetail ! I have not attempted to do anything with the rear sight without finding out if someone knows an easy fix or if anybody else has had this problem with their P220 Match rear sight ! This is the target sight which looks well designed and rugged...so I'm wondering if there is a set screw or something that may have loosened underneath the elevation ramp ? I'm new to SIG pistols...so any help is appreciated , thanks !