Quoted:
Well, I find the factory plastic Glock sights to be very easy to shoot. I guess those would be a wider rear notch?
Ah. No, factory Glock sights don't have a wide rear notch. They have a narrow rear notch and a fucking huge front sight. Here's something you can do for fun...someday when you've taken those plastic slot fillers off the gun actually try and put the front sight in the rear notch of the Glock sights. You'll find that the front sight is actually WIDER than the rear notch. Ain't that just a bowl of peaches?
The Novak sights are predicated upon a sight picture that is a bit more sane. They will have a wider rear notch around the front sight than you're used to on the Glock sights. With the wider notch it can sometimes be more difficult to tell that your sights are slightly misaligned. I use Warren sights on my M&P's. Warrens have a massively open rear notch which is great for helping to track the sights at speed, but when shooting bullseye if I don't pay very close attention to my sights I can easily push shots to the left or the right...or high...because I don't have the front sight situated exactly right in the rear notch. At closer ranges this isn't much of a problem because even with a misaligned sight picture you can still hit more or less the center of the target. At 15 yards and beyond, however, these slight misalignments start to throw shots way off.
Try getting an absolute hard focus on the front sight, even if you have to close one eye to do it. Get a perfect sight alignment (top of front sight even with top of rear, equal amounts of light on both sides of the front sight) and keep it while executing a perfect trigger press. See if that doesn't get you on target.
Quoted:
No, I literally changed my shooting stance as well which made the sights somewhat easier to see and I was using the pad of my finger.
I'm at a loss to understand how a change in stance made your sights easier to see, but if that's what's allowing you to see what you need to see to put bullets where they need to go, rock on.
When it comes to these sorts of things the first question is whether it's you or the gun. I think we've established that it's something about you...then we have to figure out what. With that last statement I think we can say that it's probably the way you are seeing the sights more than anything else. Somehow you are misaligning the sights.
Let me ask you this: When you normally shoot, what is the lighting like? Bright sunlight on an outdoor range? Poorly lit indoor range? Etc. When you were shooting the M&P were you under the same conditions as you normally shoot?