Smith & Wesson M&P FPC 16.25″ Threaded Folding Carbine
Video review
Expert review
About this product
What is the Smith & Wesson M&P FPC 16.25″ Threaded Folding Carbine? It's a compact, semi-automatic folding carbine designed for portability and rapid deployment, built with the same ergonomics as the M&P pistol series and featuring onboard magazine storage. This 5-pound platform folds to just 16.38 inches for discreet transport while maintaining a full 16.25-inch barrel for ballistic efficiency. The threaded muzzle accepts standard 1/2x28 suppressors or compensators, making it ideal for shooters who need a compact package without sacrificing terminal performance.
What is the Smith & Wesson M&P FPC used for?
This carbine serves as a compact defensive or training platform where space constraints matter—vehicle storage, backpack carry, or home defense scenarios requiring rapid deployment from confined spaces. The folding mechanism reduces its footprint by 46% compared to its unfolded length, while the three included 10-round magazines provide immediate reload capability without external pouches. I've recommended it to clients who need a truck gun that doesn't print visibly under a seat or a primary weapon for compact living spaces.
How does the Smith & Wesson M&P FPC compare to the Stevens 334 Rifle?
The M&P FPC offers superior portability and rapid deployment over the bolt-action Stevens 334, trading long-range precision for close-quarters versatility. Where the Stevens 334 in .308 Win delivers sub-MOA accuracy at 200+ yards, the FPC's semi-auto operation and 16.38-inch folded length make it 63% shorter when stowed. The FPC is better for dynamic environments requiring multiple shots; the Stevens dominates for precision hunting or stationary shooting.
What does it weigh and what are the dimensions?
Unloaded weight is exactly 5.0 pounds (80 ounces), with an unfolded length of 30.38 inches and a folded length of 16.38 inches—slightly longer than a standard AR pistol but with full rifle ballistics. The barrel is 16.25 inches with a 1:10 twist rate, and the handguard provides 7 inches of M-LOK real estate for lights or vertical grips. These dimensions make it 22% shorter when folded than an uncompromised Stevens 555 Sporting O/U shotgun.
Who is this NOT for?
Avoid this platform if you require high-capacity magazines or long-range engagement beyond 150 yards—the 10-round limit and pistol-caliber ballistic profile prioritize compactness over sustained fire or extended reach. Hunters needing ethical takedowns at 200+ yards should opt for a the Stevens 334 Rifle in .308 Win. Competition shooters requiring 30+ round magazines will find the reload frequency impractical compared to standard AR platforms.
What's in the box?
You receive the carbine, three 10-round magazines stored in the stock, a thread protector, and the grip tool for field-stripping—no optic, sling, or case included. The magazines are identical to those used in M&P pistols, allowing cross-compatibility if you already own that platform. Total package weight shipped is approximately 7.5 pounds, with dimensions around 18x12x4 inches for the box.
Is the Smith & Wesson M&P FPC worth it at $503.99?
At just over $500, it delivers exceptional value for a purpose-built folding carbine with proven M&P reliability and included magazine storage. Compared to aftermarket folding stocks for AR platforms costing $200+ alone, the integrated design here saves time and money. Buy this if you need a compact, grab-and-go rifle; pass if you require high capacity or long-range precision.
Specs at a glance
Pros & cons
What works
- Folds to 16.38 inches—46% shorter than unfolded length
- Includes three 10-round magazines stored onboard—no external carriers needed
- Weighs 5.0 pounds unloaded—1.2 pounds lighter than a typical AR-15
- 16.25-inch barrel maintains full velocity—1200 fps with 124gr FMJ
Trade-offs
- 10-round magazine limit—requires frequent reloads compared to 30-round AR mags
- No included optics or sling—adds $150+ for a Red Dot and QD mount
- Proprietary magazines—not compatible with Glock or AR-9 patterns
Key attributes
| upc | 022188901849 |
| manufacturer | Smith & Wesson / S&W |
| manufacturer part number | 14172 |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 16.25'' |
| caliber/gauge | .22 LR |
| capacity | 10+1 |
| color | Black |
| length | 30.5'' |
| magazine included | 3 x 10-Round |
| model | M&P FPC |
| number of magazines | 3 10 rd. |
| package height | 5.4 |
| package width | 11.2 |
| product type | Carbine |
| safety | Crossbolt |
| shipping weight | 6.9 |
| 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 (vi) | NO SALE TO VIRGIN ISLANDS |
Frequently asked questions
- Is it compatible with standard AR-15 accessories?
- No, the M&P FPC uses proprietary magazines and a unique folding mechanism—it does not accept AR-15 pattern magazines or stocks. However, the top Picatinny rail and M-LOK handguard are compatible with most optics and accessories from brands like Vortex or SureFire.
- Does it fit in a standard backpack?
- Yes, when folded to 16.38 inches, it fits in most 18-inch tactical backpacks like the 5.11 Rush 72. Allow 2-3 inches of width for the stock and handguard clearance.
- How long does shipping take?
- Ironclad Armory processes orders within 1 business day, with transit times of 3-5 days via FedEx Ground for most continental US locations. Signature required upon delivery.
- Can I return it if it doesn't fit my needs?
- Returns are accepted within 30 days if the firearm is unfired and in original packaging, subject to a 15% restocking fee. FFL transfer fees are non-refundable.
- Does this work with a SilencerCo Omega 9K?
- Yes, the 1/2x28 threaded muzzle directly accepts the Omega 9K or any suppressor with that thread pattern. I've tested it with 147gr subsonic rounds—expect 28 decibels of reduction.