M&Pfs .40 built on a .40 frame or 9mm?

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I don't know, but what clcdawg makes sense. S&W came out with the M&P pistol as direct competition against glock and sig to re-secure some of the LE market it lost to those companies. Last stats I saw, the 40 was the most popular LE caliber in the U.S.
 
The M&P project was built around the .40 S&W.

We were told the order of development & release for the M&P pistols was: .40 S&W, 9mm, .357SIG & .45 ACP.

It was said the order of development followed what they felt was the potential order of use/interest among their potential LE/Gov market, as well as the .45 model requiring some additional development due to the then-anticipated (and later suspended) military pistol trials.

The compacts followed as they could be fit into production.
 
The M&P project was built around the .40 S&W.

We were told the order of development & release for the M&P pistols was: .40 S&W, 9mm, .357SIG & .45 ACP.

It was said the order of development followed what they felt was the potential order of use/interest among their potential LE/Gov market, as well as the .45 model requiring some additional development due to the then-anticipated (and later suspended) military pistol trials.

The compacts followed as they could be fit into production.

The M&P was indeed originally designed around the .40 S&W round, however I would categorize it as a "mid-sized frame". Nobody refers to a K frame revolver as a ".357 frame" or a J-frame as a ".38 frame" do they?
 
I didn't address the idea of a ".40 frame", just that they designed the M&P with the .40's characteristics and operating requirements in mind from the beginning.

They designed a frame large enough to qualify as "duty/service" size, since that was their original goal (hence bringing back the honored Military & Police model line name), for the common defense calibers seen in much of the LE/Gov field (which can fit within the same grip frame dimensions).

They designed the frame, including its integral steel sub-chassis, to be capable of sustained use when chambered in the harder recoiling .40 (and .357). They didn't start with an existing 9mm frame and upgrade it at some later point to work with .40/.357.

Granted, the M&P 45 frame requires somewhat larger dimensions than the "standard" 9/40/357 models, due to the dimensions of the .45 ACP cartridge, and I suppose it would be practical to refer to it as the "large" frame M&P ... even though it comes in 3 model variations denoted by terms like full-size, mid-size & compact (using only 2 slides and 2 frames). ;)

It's sometimes a bit puzzling when it comes to how the many gun makers freely use terms like standard, full-size, compact, sub-compact, slimline, etc, or try to figure out how they arrived at those terms for some of their models.

Sometimes it can seem a bit arbitrary, you know? ;)
 
I didn't address the idea of a ".40 frame", just that they designed the M&P with the .40's characteristics and operating requirements in mind from the beginning.

They designed a frame large enough to qualify as "duty/service" size, since that was their original goal (hence bringing back the honored Military & Police model line name), for the common defense calibers seen in much of the LE/Gov field (which can fit within the same grip frame dimensions).

They designed the frame, including its integral steel sub-chassis, to be capable of sustained use when chambered in the harder recoiling .40 (and .357). They didn't start with an existing 9mm frame and upgrade it at some later point to work with .40/.357.

Granted, the M&P 45 frame requires somewhat larger dimensions than the "standard" 9/40/357 models, due to the dimensions of the .45 ACP cartridge, and I suppose it would be practical to refer to it as the "large" frame M&P ... even though it comes in 3 model variations denoted by terms like full-size, mid-size & compact (using only 2 slides and 2 frames). ;)

It's sometimes a bit puzzling when it comes to how the many gun makers freely use terms like standard, full-size, compact, sub-compact, slimline, etc, or try to figure out how they arrived at those terms for some of their models.

Sometimes it can seem a bit arbitrary, you know? ;)

Ok, cool. Thank you guys sooo much. I wanted to make sure that I was purchasing a .40 caliber pistol that was designed around the caliber. I know the .40 is a snappy caliber. I didn't want to get a .40 caliber pistol based off a 9mm frame.

I really appreciate it guys =}

Tax returns just came in, I'll post pictures of my very first handgun once I receive it. The suspense is killing me lol.
 
Boy did I miss the question. I was thinking that the original poster was concerned about the outward dimensions of the M&P and not it's strength. Fastbolt, I don't know how you interpreted the question correctly but you nailed it.
 
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