[mokona2]

Just picked up my M&P45 and wanted to replace the rear sight with a 10-8 rear sight. I removed the set screw, but the rear sight will not move in either direction. I've tried hammering it a few times (from left side only). Any suggestions?

 

[YukonGlocker]

It will move. It's just tight.

Be sure to watch for the spring and spacer under the sight:

 

[mokona2]

I don't have a proper vice to hold the slide in place to get a good whack at the rear sight. Any recommended brands?

 

[luvmy40]

Any medium to heavy duty vise will do, as long as it is anchored firmly and you cover the jaws with wood or rubber to protect the finish on your slide. You should also use a brass punch to drive the sight out. And, as YukonGlocker stated, watch for the plunger spring and cap.



Good luck