The Smith & Wesson M&P FPC in .40 S&W (Model 13782) expands the FPC lineup with the proven stopping power of the .40 caliber round, while retaining the game-changing folding design, modular magazine compatibility, and integrated mag storage that define this innovative platform.
With a 16.25″ threaded barrel (1/2×28), this blowback-operated carbine is suppressor-ready, red-dot-ready, and completely portable. The side-folding design collapses the firearm into a compact package under 17″ long—perfect for storage in a backpack, truck, or discreet case.
It comes with a 20-round magazine, and like the 9mm FPC, it’s compatible with M&P pistol magazines. A reversible charging handle, flat-face trigger, and M-LOK handguard complete the performance-ready package.
Specs:
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Caliber: .40 S&W
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Capacity: 20+1
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Barrel Length: 16.25″
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Barrel Threading: 1/2×28 TPI (suppressor-ready)
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Overall Length (Unfolded): 30.4″
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Folded Length: Approx. 16.4″
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Action: Blowback
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Trigger: Flat-face M2.0 style
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Frame: Polymer lower with aluminum upper
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Stock: Integrated magazine storage (holds two mags)
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Charging Handle: Reversible side folder
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Handguard: M-LOK compatible
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Weight: ~6 lbs (unloaded)
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Model Number: 13782
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Made in the USA
Why We Like It:
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Folds for easy storage and transport—ideal for truck, pack, or bedside
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Compatible with existing M&P .40 S&W magazines
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Suppressor-ready + optics-ready = full customization
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Delivers .40-cal punch with reduced recoil from the longer barrel
Perfect For:
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Shooters who prefer .40 S&W over 9mm
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Compact home or vehicle defense setups
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Tactical backpack builds and range training
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M&P pistol owners wanting mag compatibility