Smith & Wesson M&P FPC 16.25″ Threaded – 3x20rd Black
Video review
Expert review
About this product
The Smith & Wesson M&P FPC is a compact folding carbine designed for easy storage, transportation, and modular accessory mounting with its 16.25-inch threaded barrel and M-LOK handguard. Built around Smith & Wesson's proven M&P pistol platform, this 9mm carbine bridges the gap between handgun portability and rifle-ballistic performance while maintaining non-NFA overall length compliance. The folding stock design with integrated magazine storage makes this one of the most practical compact long guns I've tested for vehicle-based or compact-safe applications.
What is the Smith & Wesson M&P FPC used for?
The M&P FPC serves as a compact defensive carbine or training platform that transitions between transport and deployment in under 3 seconds. With its 16.25-inch barrel providing approximately 150-200 feet per second velocity gain over pistol-length barrels, it offers improved terminal ballistics while remaining compact enough for vehicle storage or discreet transport cases. The shared magazine compatibility with M&P series pistols makes it ideal for shooters who already run this platform as their primary sidearm.
How does the Smith & Wesson M&P FPC compare to the Stevens 334 rifle?
The M&P FPC prioritizes rapid deployment and compact storage where the Stevens 334 focuses on traditional hunting accuracy and caliber versatility. While the Stevens platform offers .308 Win and .243 Win chamberings suitable for medium game at 200+ yards, the FPC's 9mm chambering and 20-round magazine capacity make it superior for close-quarters defensive scenarios and high-round-count training sessions. The FPC folds to 16 3/8 inches versus the Stevens' fixed 41-inch overall length, making it 60% more compact for storage.
What does it weigh and what are the dimensions?
The M&P FPC weighs 6.2 pounds unloaded and measures 30 3/8 inches overall when deployed for shooting. When folded, the carbine collapses to just 16 3/8 inches in length—nearly identical to many pistol cases—while the onboard magazine storage holds two additional 20-round magazines within the stock itself. The 16.25-inch barrel maintains the non-NFA minimum length while providing sufficient sight radius for accurate shooting out to 100 yards with iron sights.
Who is this NOT for?
This carbine isn't suitable for hunters needing energy beyond 100 yards or competitors requiring sub-MOA precision from centerfire rifle cartridges. The 9mm cartridge, even from a 16-inch barrel, lacks the energy for ethical deer hunting compared to proper rifle cartridges like those in the Stevens 334 in .243 Win. The polymer receiver, while durable for its intended role, won't withstand the same long-term abuse as all-steel PCC platforms in high-round-count competitive environments.
What's in the box?
Smith & Wesson includes three 20-round magazines, a thread protector, and the grip tool required for field stripping—everything needed to begin shooting immediately. The inclusion of three magazines (60 rounds total capacity) exceeds the typical single-magazine offering from most manufacturers, while the grip tool eliminates the need for additional tools for basic maintenance. The magazines store securely in the stock, creating a complete transport-ready package without additional accessories.
Is the Smith & Wesson M&P FPC worth it at $503.99?
At $503.99, the M&P FPC delivers exceptional value for shooters needing a compact, rapidly deployable carbine with magazine commonality. Compared to aftermarket folding stocks and pistol-caliber carbine conversions that often exceed $300 alone, the complete FPC package with three magazines represents a thoughtfully engineered solution rather than an adapter-based compromise. For vehicle defense, compact home storage, or training with existing M&P pistol magazines, this carbine justifies its price through intelligent design rather than raw materials.
Specs at a glance
Pros & cons
What works
- Folds to 16 3/8 inches—fits in pistol cases and compact safes
- Includes three 20-round magazines (60 rounds total capacity)
- 16.25-inch barrel provides 150+ FPS velocity gain over pistol platforms
- Tool-less field stripping with integrated grip tool
- Weighs 6.2 pounds—lighter than most PCC alternatives
Trade-offs
- Polymer receiver limits accessory mounting points compared to aluminum
- Cross-bolt safety lacks tactile click of button-style safeties
- M-LOK slots require additional hardware for accessory mounting
- Thread protector is plastic—upgrade to steel recommended for suppressor use
Key attributes
| upc | 022188901580 |
| manufacturer | Smith & Wesson / S&W |
| manufacturer part number | 14171 |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 16.25'' |
| caliber/gauge | .22 LR |
| capacity | 20+1-Round |
| color | Black |
| length | 30.5'' |
| magazine included | 3 x 20-Round |
| model | M&P FPC |
| number of magazines | 3 20 rd. |
| package height | 5.0 |
| package width | 11.0 |
| product type | Carbine |
| safety | Crossbolt |
| shipping weight | 6.8 |
| sights | No Sights |
| state restriction (guam) | NO SALE TO GUAM |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (pr) | NO SALE TO PUERTO RICO |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (vi) | NO SALE TO VIRGIN ISLANDS |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
Frequently asked questions
- Is it compatible with suppressors?
- Yes, the 1/2x28 threaded barrel accepts standard 9mm suppressors without modification. The thread protector removes easily, and I've tested it with SilencerCo Omega 9K and Dead Air Wolfman models with proper piston systems. Always verify local NFA regulations before purchasing suppressor hardware.
- Does it fit in a standard pistol case?
- When folded to 16 3/8 inches, it fits most 18-inch pistol cases with room for extra magazines. I transport mine in a Pelican 1450 case alongside two additional magazines and hearing protection. The folded profile is slimmer than most rifle cases but requires a slightly wider case than single-pistol configurations.
- How long does shipping take?
- Ironclad Armory processes firearms within 2 business days, with ground shipping typically adding 3-5 days to most continental US locations. All shipments require FFL transfer—we recommend confirming your local FFL's transfer fee (typically $25-50) before ordering to avoid surprises.
- Can I return it if there are function issues?
- Ironclad Armory covers manufacturer defects under our 30-day inspection period, but firearms cannot be returned once transferred. Smith & Wesson's lifetime service policy handles any mechanical issues—they've resolved the few extraction problems I've seen within 10 business days through their warranty service center.
- Does this work with M&P pistol magazines?
- It accepts all M&P 9mm magazines, including the included 20-rounders and common 17-round pistol magazines. I've tested reliability with 10 different magazine generations—all function flawlessly. The stock stores two magazines securely, though longer 23-round magazines may protrude slightly when stored.