I have a friend who says his factory original M&P40 has a trigger pull of 4.5 lbs. Does anyone know of any M&P trigger option other than the standard 6.5 lbs. listed by S&W?
I don't think Smith and Wesson does but most gun smiths can set the trigger any way you want. My M&P has a heavy trigger which I like in a carry gun. If I were to use it for targets I would want it much lighter like other guns I own.
In the armorer class I attended it was discussed that the trigger pull weight for the M&P had a normal spec range of +/- 2 lbs of the listed standard weight.
The standard M&P 40/9/357 has a listed trigger weight of 6 1/2 lbs and depending on how the involved parts come together in any particular gun the normal spec range of +/- 2 lbs could allow for an occasional trigger as low as 4 1/2lbs, especially after the gun has become broken in a bit.
The M&P 45 has a slightly heavier standard trigger weight than the other calibers, with the same +/- spec range. FWIW, my M&P 45 was initially on the heavier end of the normal range, with some digital averages taken when the gun was NIB of around 8 1/2 - 9 1/2 lbs. I haven't bothered to check the weight with the gauge again as it become much smoother and seemingly 'lighter in weight' (by feel) after I'd fired several hundred rounds through the gun. I get excellent practical accuracy from the gun.
My M&P 40c trigger pull weight felt a bit lighter than my M&P 45, according to my finger, but I wasn't interested enough to bother checking the actual pull weight average with the gauge. It felt smooth & consistent and the gun demonstrated noticeably good practical accuracy during range drills so I really wasn't interested in getting out the gauge to get a 'reading' of the average pull weight. The range results spoke well enough for themselves.
The M&P Pro Series has a lighter trigger standard (Performance Center sear).
Had a M&P 9 with a really bad trigger and had a
gun smith work on it. It was better but had a lot
of free travel. Wound up selling it and bought a
M&P 40c. This one is great, a keeper. Don