My trigger doesn't always reset. I've replaced every part with new factory parts except for the frame and slide, and it still doesn't reset half of the time. I've adjusted that candy cane looking piece to hit the striker block to its proper spot but it still doesn't reset. I've cleaned out the sear block and tried every type of oil and I've run it dry but the striker doesn't reset half of the time. I know it has to be something to do with the sear block assembly at the back of the frame or with the striker. None of the parts are broken or show any signs of wear, and I've sent it to S&W and had two different gunsmiths look at it. Has this happened to anyone else? Does anyone know what is causing it?

Name: Smith & Wesson M&P 40
Brand: Smith & Wesson
SKU: 11917
Rating: 5 (24 reviews)

Smith & Wesson M&P 40

GunCritic Score

Critic Rating

User Rating

24 Reviews

MSRP:

$354.69

Used Price:

$354.69

Sale Price:

$394.10

Smith & Wesson M&P 40 Gun Stats

Smith & Wesson M&P 40

Palmetto State Armory

New

From $514.99

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Smith & Wesson is a globally recognized manufacturer of quality firearms for enthusiasts, hunters, collectors and professionals; since 1852, dedicated to the tradition of quality, reliability, performance and innovation. And with the Smith & Wesson M&P40 Semi Auto Pistols , you'll receive the features, quality and proven performance that Smith & Wesson is known for. Â Â

Smith & Wesson M&P 40 For Sale

Smith & Wesson M&P 40

Guns.com

$382.28

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Smith & Wesson M&P 40

Sportsman's Warehouse

$374.40

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Smith & Wesson M&P 40

MidwayUSA

$417.79

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Smith & Wesson M&P 40

Cheaper Than Dirt

$401.98

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Smith & Wesson M&P 40

Brownells.com

$349.99

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Smith & Wesson M&P 40

KYGUNCO

$344.99

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Smith & Wesson M&P 40

GrabAGun

$348.99

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Smith & Wesson M&P 40

EuroOptic.com

$382.28

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Smith & Wesson M&P 40

Guns.com

$405.92

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Smith & Wesson M&P 40

Academy Sports + Outdoors

$382.28

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Smith & Wesson M&P 40

Firearms Depot

$386.22

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Smith & Wesson M&P 40

Optics Planet

$398.04

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Smith & Wesson M&P 40 Specs

1 Brand

Smith & Wesson

2 Category

Handguns

Technical Data

Caliber

.40 Smith & Wesson

Weight

27 oz

Action

Double Action

Finish

Black

Gun Type

Semi-Automatic Pistol

Sights

Adjustable

Barrel Length

4.25 Inches

Height

5.5 Inches

Width

1.25

Length

7.5"

Capacity

15 + 1

Smith & Wesson M&P 40 Features

The Smith & Wesson M&P40 is a semi-automatic short-recoil operated pistol that uses a tilting-barrel action. This striker-fired pistol is built into a polymer frame and has a 4.25 inch barrel set in a stainless steel slide. The frame includes a MIL-STD 1913 Picatinny rail under the barrel for mounting lasers and weapon lights.

Smith & Wesson M&P 40 Ballistics

.40 Smith & Wesson Ballistic Data

Range (Yards)	Drop (inches)		Velocity		Energy		Wind drift (inches)		Time (milliseconds)
0	0		0		0		0		0
50	0		0		0		0		0
100	0		0		0		0		0
150	0		0		0		0		0
200	0		0		0		0		0
250	0		0		0		0		0
300	0		0		0		0		0
350	0		0		0		0		0
400	0		0		0		0		0
450	0		0		0		0		0
500	0		0		0		0		0

Smith & Wesson M&P 40 Capacity

Smith & Wesson M&P 40 Capacity

The M&P40 is chambered in .40 S&W and feeds from double-stack, single-feed magazines with a standard capacity of 15 rounds. 10-round magazines exist for users in states with capacity restrictions, and 30 round extended magazines are available from aftermarket manufacturers.

Smith & Wesson M&P 40 Ergonomics

The M&P40 was designed during the era of replaceable back straps for the grips, and the M&P is shipped with three different sizes. Replacing the straps includes dropping the magazine, twisting the nub on the bottom of the grip to remove the strap pin, taking the grip off and switching it with a different size panel. All fire controls are ambidextrous and the magazine release is easily swapped from left to right.

Smith & Wesson M&P 40 Fit & Finish

The M&P series of pistols has undergone many design overhauls, though all of them employ durable materials with coatings that prevent damage to the components from weather and wear. Almost all metal components are made of stainless steel. There is plenty of aftermarket support for the M&P if you are looking to upgrade any parts.

Smith & Wesson M&P 40 Concealability

Measuring 7.5 inches long, 5.5 inches tall and 1.25 inches wide, the M&P 40 is only slightly easier to conceal than a 1911. If you plan to carry an M&P2.0 inside the waistband, it is recommended that you wear an undershirt as the grip texturing can cause irritation when held against bare skin.

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Smith & Wesson M&P 40 Specs

1 Brand

Smith & Wesson

2 Category

Handguns

Smith & Wesson M&P 40 Parts & Upgrades

Holsters

Magazines

How much is a Smith & Wesson M&P 40 worth?

In 2024 a new or used Smith & Wesson M&P 40 value varies depending on supply and demand. In the last 12 months there is great demand for a Smith & Wesson M&P 40 and most handguns. The Price for a Smith & Wesson M&P 40 has increased in cost by $0.00 in 2024 compared to 2023.

Estimated New and Used Values for a Smith & Wesson M&P 40 Values are based on a basic model with no options or colors.

Condition	Trade-In	Private Party	Dealer
New In box	$256.17	$334.99	$394.10
Excellent	$236.46	$315.28	$354.69
Very Good	$216.76	$315.28	$354.69
Good	$197.05	$295.58	$334.99
Fair	$137.94	$256.17	$315.28
Poor	$98.53	$197.05	N/A

Gun Value Conditions explained:

New in box - 100% condition in unopened box. Excellent - 95%+ condition with or without box.

Very Good - 90% - 95% condition (all parts/finish should be original).

Good - 80-90% condition (all parts/finish should be original).

Fair - 30% - 80% condition, parts, and finish may or may not be original. Must function properly and shoot.

Poor - under 30% condition. Firearm has severe wear and tear, does not function, or is damaged.

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Range (Yards)	Drop (inches)		Velocity		Energy		Wind drift (inches)		Time (milliseconds)
0	0		0		0		0		0
50	0		0		0		0		0
100	0		0		0		0		0
150	0		0		0		0		0
200	0		0		0		0		0
250	0		0		0		0		0
300	0		0		0		0		0
350	0		0		0		0		0
400	0		0		0		0		0
450	0		0		0		0		0
500	0		0		0		0		0

Range (Yards)	Drop (inches)		Velocity		Energy		Wind drift (inches)		Time (milliseconds)
0	0		0		0		0		0
50	0		0		0		0		0
100	0		0		0		0		0
150	0		0		0		0		0
200	0		0		0		0		0
250	0		0		0		0		0
300	0		0		0		0		0
350	0		0		0		0		0
400	0		0		0		0		0
450	0		0		0		0		0
500	0		0		0		0		0

Range (Yards)	Drop (inches)		Velocity		Energy		Wind drift (inches)		Time (milliseconds)
0	0		0		0		0		0
50	0		0		0		0		0
100	0		0		0		0		0
150	0		0		0		0		0
200	0		0		0		0		0
250	0		0		0		0		0
300	0		0		0		0		0
350	0		0		0		0		0
400	0		0		0		0		0
450	0		0		0		0		0
500	0		0		0		0		0