How It's Made: Smith & Wesson M&P Handguns

by
posted on March 26, 2020
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
One of the main handgun lines produced by Smith & Wesson is its M&P striker-fired semi-automatic pistol series. The M&P brand of Smith & Wesson handguns started back in 1899 with the release of the Smith & Wesson .38 special cartridge and the Military & Police revolver, which became the Model 10 still in production.

The M&P brand was reborn in 2005 with the release of Smith & Wesson's M&P series of polymer-framed pistols, which grew to include rifles the following year. Since then, the M&P brand of pistols has grown into several families of polymer-frame pistols, like the M&P Shield, M&P Bodyguard and M&P 2.0 families.
Outside facade of the Smith & Wesson Precision Components building in Massachusetts.

Small parts and frames for the M&P series are fabricated by Smith & Wesson Precision Components, which is a brand within Smith & Wesson. There, many parts for several different lines are made, including the Smith & Wesson, Performance Center, Thompson Center Arms and the M&P lines.

All the various caliber and frame sizes are manufactured under one roof. The manufacture one of the polymer frames begins with the processing of engineered resin pellets which are processed through a drying unit, to remove all moisture, before going into the press. It is then fed into an injection barrel for the press and heated into a molten state.
Inside of the mold used to form Smith & Wesson M&P pistol frames.

Liquified resin is then forced into the cavity of the mold through pressure to fill the voids. One of the components fused into the frame during the molding process is the stainless-steel chassis system, which acts as a skeleton for the polymer frame. This feature is longer in the M&P 2.0 to ensure that the dust-cover rail segment does not wobble and remains rigid. The chassis struts also hold the serial number for each pistol, which are logged after the chassis struts are over-molded into the frame.

The material is then allowed to cool before being removed from the mold. Each raw, molded frame is then checked to make sure that they match specified internal and external specifications. After the frames have passed initial checks, some additional assembly steps take place at the press including the addition of a backstop and a frame tool. Additional testing is also conducted on fit to ensure that quality requirements of the frames are met. The parts are then boxed and shipped to the main Smith & Wesson plant at Springfield, Massachusetts for final assembly and tests.
A Smith & Wesson plant employee points out the contours of a newly molded M&P pistol frame.

At the main plant, the barrels and slides for the M&P series are machined. The frames are unboxed and then paired with a slide and barrel. They are then built up with other parts into complete firearms, with more quality checks being made along the way. The final test for the new M&P pistols is a test-fire. When they pass, they are finally packaged and made ready for sale to the customer.

To see how all of this works together, check out our American Rifleman TV episode above.


Latest

Rock River Arms A1 Carbine SBR
Rock River Arms A1 Carbine SBR

Review: Rock River Arms A1 Carbine SBR

The Rock River Arms A1 SBR is just plain cool, and there’s little justification needed beyond that for picking up a new gun. It’s a mixture of throwback, retro and nostalgia with a bayonet lug, and you just can’t go wrong there.

The Armed Citizen® July 20, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Plinking Perfect: 5 Must-Haves for Your Next Rimfire Shoot

What better way to celebrate 250 years of freedom than to go out plinking this summer? Here are five great products that will make your next rimfire range trip better than ever before.

June Gun Purchases up Nearly 12 Percent—Virginia Sales Skyrocket

A significant portion of June's double-digit growth in gun sales was fueled by Virginia enthusiasts buying before July 1, when the state’s restrictive “assault weapons” and magazine-ban legislation was scheduled to become law.

Volksoptik: The Affordable Zeiss V3 Riflescope Line

With the introduction of its V3 series of riflescopes, Zeiss is offering a budget-friendly, yet high-quality “gateway” to its line of optics. 

Review: Glock's New Slimline Magazines

Glock has finally introduced its own 15-round magazine for its slimline models G43X and G48.

Interests



Get the best of American Rifleman delivered to your inbox.