Description
Smith & Wesson took everything people liked about the 9mm FPC and chambered it in .40 S&W, giving this folding carbine a little more thump downrange. The big trick here is the horizontal folding design. Instead of folding over the top like some other pistol caliber carbines, the FPC hinges to the side, which means your optic stays mounted, zeroed, and out of the way. Push the release lever, fold it down to 16.375 inches, and it disappears into a backpack or the included carry bag. Unfold it and you have a full 30.375 inch carbine with a 16.25 inch barrel that squeezes real velocity out of the .40 cartridge.
Runs on M&P Pistol Magazines
If you already own an M&P40, this carbine slides right into your setup. It feeds from full-size and compact M&P .40 S&W double-stack magazines and uses the same familiar grip and trigger feel as the pistol line, so the controls feel like second nature. The buttstock holds two spare mags in a quick-release storage system, and with the included one 15-round and two 20-round magazines, you can keep 55 rounds on the gun itself. The flat-face trigger breaks clean, and the reversible magazine catch keeps lefties in the game.
Set Up the FPC Your Way
The top Picatinny rail is ready for a red dot or low-power optic since no sights come installed, and the M-LOK slots along the handguard handle lights, hand stops, or sling mounts. The muzzle is threaded 9/16×24 with a protector in place, so adding a suppressor or muzzle device is simple.
Why the M&P FPC Earns Its Spot
This is the carbine for the truck, the camper, the range bag, or the hiking pack. Owners consistently report smooth, soft recoil for a blowback gun and boring reliability, which is exactly what you want. At around 5.78 pounds with an aluminum receiver and tight lockup at the hinge, it shoots like a solid little rifle, not a folding novelty. Toss it in the included bag with all three mags and you have a complete, grab-and-go package.
Key Specifications
- Manufacturer Part Number: 13782
- UPC: 022188898422
- Model: M&P FPC
- Caliber: .40 S&W
- Action: Semi-Auto, Straight Blowback
- Barrel Length: 16.25"
- Muzzle Thread: 9/16×24 with Thread Protector
- Capacity: 20+1
- Magazines Included: One 15-Round, Two 20-Round
- Overall Length: 30.375" Unfolded / 16.375" Folded
- Weight: 5.78 lbs
- Receiver: Aluminum, Black Anodized
- Handguard: Polymer M-LOK with Picatinny Top Rail
- Sights: None, Optics Ready
- Safety: Crossbolt
- Color: Black
What’s Included
- Smith & Wesson M&P FPC carbine in .40 S&W
- One 15-round magazine
- Two 20-round magazines
- Carry bag with storage compartments and hook-and-loop straps
- Thread protector (installed)
Frequently Asked Questions
Will the M&P FPC .40 S&W accept my M&P pistol magazines?
Yes, that is one of its best features. The FPC in .40 S&W feeds from both full-size and compact M&P double-stack .40 magazines, so if you run an M&P40 pistol you can share mags between the two. It ships with three of its own: one 15-rounder and two 20-rounders.
Can I leave an optic mounted when the FPC is folded?
You can. Unlike carbines that fold over the top, the FPC hinges horizontally to the side, so the Picatinny top rail and anything mounted to it stays put. Your red dot keeps its zero, and the gun still folds down to 16.375 inches for storage or transport.
Does the Smith & Wesson FPC come with sights?
No sights are included from the factory. The full-length Picatinny rail up top is made for a red dot, which is what most owners run on this carbine. A compact reflex sight with unlimited eye relief pairs really well with the forward rail position.
Is the FPC 40 S&W suppressor ready?
It is. The 16.25 inch barrel comes threaded 9/16×24 with a thread protector installed, so mounting a .40 caliber suppressor or muzzle device is straightforward. Even with a can attached, the folded package stays remarkably compact.





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