Smith & Wesson M&P 5.7 5.7x28mm
Model: 13347
Smith & Wesson M&P 5.7 5.7x28mm
Model: 13347
Full Specifications
About This Firearm
Smith & Wesson entered the 5.7×28mm market in 2023 with the M&P 5.7, and they came in with the lightest trigger in the category: 4.0 lbs on a single-action striker design. That 4.0 lb pull is 0.8 lbs lighter than the Ruger-57 and 2.2 lbs lighter than the FN Five-seveN — a difference that is noticeable in practical shooting. Combined with a 22+1 capacity (2 more than the FN and Ruger) and a factory-threaded 1/2×28 barrel, the M&P 5.7 arrived with a stronger spec sheet than either earlier competitor.
At 26.7 oz, it is the heaviest of the three polymer-framed 5.7 pistols, but owners report that the extra mass actually helps — the already-light 5.7 recoil is even flatter in the M&P than in the lighter Ruger. The 5" stainless barrel with Armornite finish is well-regarded for corrosion resistance in field conditions. The optic cut is factory-standard on all M&P 5.7 models, accepting the same adapter plates as the rest of the M&P line, which means optic compatibility is well-documented. At around $650 street, S&W priced it slightly below the Ruger-57, which made it an immediate value leader at launch.
The M&P 5.7 is the logical starting point for a new buyer entering the 5.7 category today. It has the lightest trigger, most capacity, factory-threaded barrel, and the lowest street price of the three established-brand options. The primary uncertainty is long-term track record — it is a 2023 gun with years of owner feedback now available compared to when it first launched. If you want a proven platform with additional years of owner data, the Ruger-57 has a longer head start. If the spec sheet matters more than heritage, the M&P 5.7 wins on paper. Before mounting an optic, verify which footprint adapter the slide accepts — S&W includes plates for common red dots but not all footprints are covered straight from the box.
Best For
Strengths & Limitations
- The 4.0 lb single-action trigger is the lightest factory trigger in the 5.7 category. It ships clean as-delivered — no modifications needed to get a trigger that outperforms what the FN and Ruger offer straight from the box.
- Factory-threaded 1/2×28 barrel is standard on all M&P 5.7 models. No other 5.7 pistol includes this — threading an aftermarket barrel elsewhere runs $100-150 before you've bought the suppressor.
- 22+1 capacity is 2 rounds more than the FN Five-seveN and Ruger-57. In a 5.7 pistol, an extra magazine dump costs roughly $22 at current ammo prices — that context matters when evaluating capacity differences in this caliber.
- Launched in 2024, the M&P 5.7 has limited long-term owner data. Early reviews are positive, but the FN and Ruger platforms have years of documented reliability history that S&W cannot match yet.
- At 26.7 oz, it is the heaviest of the three polymer-framed 5.7 pistols. For a full-day carry gun that weight is worth knowing, though the extra mass contributes to the already-flat recoil profile.
Category Rankings
How the Smith & Wesson M&P 5.7 5.7x28mm ranks among full-size 5.7x28mm handguns.
Ballistics Calculator
Calculate trajectory, drop, and energy for 5.7x28mm ammunition.
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Frequently Asked Questions
What optics fit the S&W M&P 5.7, and does it need adapter plates?
The M&P 5.7 uses a proprietary optic cut with adapter plates included in the box. S&W ships it with plates for Trijicon RMR/SRO, Holosun 507C/407C, Leupold DeltaPoint Pro, and a few other common footprints. If your red dot uses a less common footprint, check the S&W optic compatibility chart before purchasing — not every mini-red-dot on the market is covered. The plate system is the same as other M&P optic-ready models, so aftermarket plate options are available from Shield Arms and others.
Is the M&P 5.7 factory-threaded barrel rated for full-auto fire or sustained suppressor use?
The M&P 5.7 is a semi-auto pistol; there is no full-auto consideration. For suppressor use, the Armornite-treated stainless barrel handles sustained suppressed fire well — stainless is a better suppressor-host material than carbon steel because it handles the back-pressure and heat more cleanly. The 1/2×28 thread pitch is standard for 5.7 suppressors. Thread protector is included.
