Just picked up a new m and p 2.0 4 inch barrel , had the apex duty enhancement trigger installed, which is a huge improvement. When i first got the gun,during dry fire i would notice the front sight moving after each press. I attributed this to the horrible over travel.After getting the apex trigger installed i mounted a holoson 407c and the dot now would jump clearly. I now see it's the slide moving forward upon trigger press.I know other striker fired guns do this but not to this extent. I haven't shot it yet but i can't imagine that movement will not effect follow through and accuracy. Ant insight would be appreciated. Thanks