I just purchased my M&P 9mm Shield a few days ago and can honestly tell you that the slide is so "hard" to pull back that I almost need 'two hands, unlike what the instructions say, which is to "grasp the serrated sides of the slide from the rear with the thumb and fingers of the left hand and draw the slide fully rearward and lock it open by pushing the slide stop with the 'thumb of the right hand" (paraphrased somewhat).
In order for me to pull the slide back or lock it open have to grasp the complete grip with all fingers including the thumb of my right hand, tilt it slightly and put a 'death grip around the 'whole slide wth my left hand while pressing both arms against my stomach pull so hard until I almost get a muscle spasm from the tension (please tell me it will loosen up quite a bit later, or I will assume I have a 'defective weapon). I don't want to end up with arms looking like "Popeye's with big muscles protruding out before I am able to pull the slide with just the fingers and thumb of one hand.
In order for me to pull the slide back or lock it open have to grasp the complete grip with all fingers including the thumb of my right hand, tilt it slightly and put a 'death grip around the 'whole slide wth my left hand while pressing both arms against my stomach pull so hard until I almost get a muscle spasm from the tension (please tell me it will loosen up quite a bit later, or I will assume I have a 'defective weapon). I don't want to end up with arms looking like "Popeye's with big muscles protruding out before I am able to pull the slide with just the fingers and thumb of one hand.