I purchased a Vortex Venom reflex/red dot sight for my M&P Shield and a base to put it on. Well after removing the rear sight and installing the base then the red dot it was definitely not to my liking. Normally when I bring up the Shield the sights are either right on or just slightly off target. With this sight, no matter how I adjusted it, I could not find the dot readily which is the reason for getting it in the first place.
Maybe because I'm used to looking down lower, i.e. right on top of the slide or what but everything came back off the Shield and were returned. Luckily I purchased the items off of Amazon so returning was a snap.
My advice, if you're planning on buying a reddot scope for your handgun see if you know anyone that has one to try it out first
Now I have to re-sight in the open sights.