Originally Posted by MotorCityGun

Ditto what all of the previous posters have stated.

I'll probably receive alot of push back for the comment I'm about to make, but the only safety on a semi-auto pistol that makes any sense (to me) is when it's on a 1911 style pistol, i.e. "cocked and locked"/Condition 1.

The 40c like many of the other M&P semi-auto pistols, is a double action (DA), striker fired pistol (i.e. no hammer for SA). There have been many previous posts about the pros & cons of manual and mag safety equipped pistols, and whether or not there should be a round (ready) in the chamber (Condition 1 for a striker/DA) that you can search for on this forum. Also, there is a plethora of posts related to round/caliber "power".

My preference is no safety and pistol in the "ready-to-fire, just-pull-the trigger" condition (1).