Smith and Wesson M&P40 rear sight adjustment

[Sully102]

I've been consistently shooting groupings to the left of my target with my M&P40c and was wondering how I adjust the rear sight? Thinking it could have been just me, I went out shooting a Beretta and Glock and I shot dead center, then back to my M&P it was to the left again. I took out the screw on the rear sight, but the sight does not just slide or move at all. Is there a tool I need or am I just doing it wrong?

Thanks,
Alex S.

 

[boxerjake77]

I shot left with mine,then got a trigger job and problem solved.

 

[Sully102]

Any ideas outside of a trigger job? And if that is the best way, how do I go about by getting one done?

 

[Gammon]

Any ideas outside of a trigger job? And if that is the best way, how do I go about by getting one done?

The rear sight can be drifted in its dovetail using a punch. Brass will work but will leave a slight mark. Aluminum or plastic can also work. Always use a punch that is softer thane the sight! Move the rear sight in the direction you want the group to move. Before attempting any adjustment I would fire the pistol from a rest to eliminate any shakes or trigger jerk.

 

[Daedalus_Ex]

When I purchased my M&P 40c the sights were way off. The rear sight was shifted almost completely right, to the point that you couldn't see any of the space that should of been left. The front sight was only a little off, but not too much to cause major aiming issues.

I noticed it after my groupings were way right. If I put it any further back, I'm sure I wouldn't of hit paper.

Not to mention, in order to shift the sights back over it took a piece of brass and a hammer. I wish there was an easier way to move them, since they still need to be bumped a little.

 

[vellnueve]

Have someone else shoot it... you don't want to change the sights if its you causing the problem.

 

[Dziner]

Have someone else shoot it... you don't want to change the sights if its you causing the problem.

I second that. When I first got my M&P40 i was left and low, so consistently I brought it back to AG Guns and asked him to zero it and sight it for me. He looked at it and asked some questions which then prompted him to inform me to research a " shot analysis chart" which I did and found that the M&P does require a SLIGHT adjustment in the way I held it in order to achieve a Point of Impact where my Point of Aim was. Do some research, take a "target pistol shot analysis" target to the sight and observe the issues to compare to the chart. Make some personal corrections and THEN see if you still feel it is off.

my .02 based on my own experience with my M&P40

 

[jar]

When I saw the thread title, I was ready to bet a substantial sum that you were shooting left. It's not the sights, it's you. Fixing the trigger will help a lot.