Smith & Wesson 19440 M&P 9mm 17-Round Magazine

Product Description

The Smith & Wesson 19440 M&P 9mm 17-round magazine is a factory magazine designed for use in Smith & Wesson M&P series pistols chambered in 9mm. It holds 17 rounds and serves as a replacement or spare for the magazines that ship with most full-size M&P 9mm models.

Factory magazines are built to the same tolerances as the originals. That means consistent feeding, reliable lockback, and drop-free performance when you press the release.

Shooters buy extra magazines for range work, competition, and to keep spares on hand. Having backups means less downtime at the range and no interruptions if a magazine wears out or gets lost.

Key Facts

• Product Name: Smith & Wesson 19440 M&P 9mm 17-Round Magazine
• SKU: SW-19440
• Category: Pistol Mags
• Manufacturer: Smith & Wesson

Why 17-Round Capacity Matters

Seventeen rounds is the standard capacity for full-size M&P 9mm pistols. This magazine matches the footprint and grip length of the factory mag, so there is no extension protruding below the grip.

That flush fit keeps the gun concealable if you carry a full-size M&P. It also means you can use the same holsters, mag pouches, and gear you already own without modification.

If you run drills or compete, having multiple magazines at the same capacity keeps your reloads consistent. You train with what you carry.

Factory vs. Aftermarket Magazines

Aftermarket magazines cost less, but they introduce variables. Different feed lip geometry, spring tension, and follower design can all affect reliability.

Factory Smith & Wesson magazines are built to the specifications that the pistol was tested with. That reduces the chance of feeding issues, especially with hollow-point defensive ammunition.

For range use, either option works. For carry or duty, many shooters stick with factory to eliminate one potential point of failure.

Ordering from Western Sport

Order online and it ships straight to your door. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: Will the Smith & Wesson 19440 magazine fit all M&P 9mm pistols?

A: This magazine is designed for M&P series pistols chambered in 9mm that use 17-round magazines. It will not fit M&P models chambered in other calibers or compact/subcompact models with shorter grip frames. Send us a message to confirm compatibility with your specific M&P model.

Q: Is this a factory Smith & Wesson magazine or an aftermarket product?

A: The Smith & Wesson 19440 is a factory magazine made by Smith & Wesson. It is the same magazine design that ships with many full-size M&P 9mm pistols from the factory.

Q: How many spare magazines should I keep on hand?

A: Most shooters keep at least three to five magazines total. That allows you to rotate them during range sessions, reduces wear on any single mag, and gives you backups if one is lost or damaged. Competition shooters often carry more.

Q: Can I use this magazine for concealed carry in Texas?

A: Yes, Texas does not restrict magazine capacity for lawful carriers. This 17-round magazine is legal to own and carry in Texas for self-defense, provided you meet all other requirements for carrying a handgun.

Q: Will this magazine work with both ball ammunition and hollow points?

A: Factory Smith & Wesson magazines are designed to feed a wide range of ammunition types, including full metal jacket ball rounds and jacketed hollow points. Function depends on your specific pistol and ammunition combination, so test any defensive load before relying on it.

Additional information