Smith & Wesson M&P 9 Shield Plus
- Category
- Pistol
- Barrel
- 79 mm
- Weight, empty
- 507 g
- Introduced
- 2021
About
What it is, and why it matters
The Smith & Wesson M&P 9 Shield Plus is a micro-compact, striker-fired semi-automatic pistol introduced in 2021 as the high-capacity evolution of the original M&P Shield. Chambered in 9x19mm Parabellum, the Shield Plus features an innovative thin-profile double-stack magazine design that provides 10+1 rounds with the flush-fit magazine and 13+1 rounds with the extended magazine, a significant improvement over the original Shield's 7-8 round capacity while maintaining a nearly identical slim profile. The pistol features a 3.1-inch stainless steel barrel with a 1:10-inch twist rate, an overall length of 6.1 inches, height of 4.6 inches, width of just 1.1 inches, and an unloaded weight of approximately 17.9 ounces (507g) without magazine. The polymer frame is paired with a stainless steel slide treated with Smith & Wesson's Armornite corrosion-resistant finish. Standard features include a flat-face trigger with tactile and audible reset, an 18-degree grip angle optimized for natural point of aim, front and rear slide serrations, reversible magazine release, and Smith & Wesson's patented sear deactivation system for safe disassembly without pulling the trigger. The trigger pull weight is approximately 5.5 pounds (24 N). The Shield Plus is available in multiple configurations including optics-ready models and variants with a manual thumb safety. It ships with both a 13-round and a 10-round magazine at an MSRP of $499.
The Shield Plus arrived in a concealed carry market transformed by the P365's high-capacity micro-compact revolution. Smith & Wesson's answer was to keep the beloved Shield's ergonomics and slim profile while nearly doubling its ammunition capacity, proving that the original Shield platform had untapped potential all along.
The Shield Plus represents Smith & Wesson's response to the concealed carry capacity revolution sparked by the SIG Sauer P365 in 2018. While the original M&P Shield (2012) was a single-stack design limited to 7-8 rounds, the Shield Plus adopted a modified double-stack approach that nearly doubled capacity without significantly increasing width. The pistol retains the same 18-degree grip angle as the full-size M&P line for training consistency. Performance Center variants feature a ported barrel and slide, enhanced trigger, and fiber-optic sights. The optics-ready models include a factory-milled slide for micro red dot sights. The Shield Plus has been extremely well-received in the civilian concealed carry market and is widely regarded as one of the best values in the micro-compact category.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Smith & Wesson
- Category
- Pistol
- Country
- United States
- Status
- In production
- Produced
- 2021
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 79 mm
- Overall length
- 155 mm
- Height
- 117 mm
- Width
- 28 mm
- Sight radius
- 130 mm
- Weight, empty
- 507 g
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Short recoil
- Firing mechanism
- Striker fired
- Trigger
- Single action
- Trigger pull
- 24.0 N
- Capacity
- 13
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Polymer
- Slide
- Stainless steel
- Barrel
- Stainless steel
- Finish
- Armornite
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 358 m/s
- Muzzle energy
- 477 J
- Effective range
- 25 m
- Maximum range
- 1800 m
Trajectory
What the round does downrange
Solved from the muzzle figures and the bullet. The dashed rule is the effective range on the record, and the crosses are the steps the solver returned.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Micro compact design
Flat face trigger
18 degree grip angle- Tactile audible trigger reset
Reversible magazine release
Armornite finish
Front rear slide serrations
Plus p rated
Optics ready variant
13 round and 10 round magazines included
Standing
How it compares
Each figure against the firearms of the same type and cartridge that record it, or of the same type where that cartridge has too few. Positions are read to the nearest tenth.
| Measurement | This firearm | Median | Position |
|---|---|---|---|
| Empty weightAmong 560 9x19mm Parabellum pistols | 507 g | 765 g | Lighter than about 90% |
| Overall lengthAmong 559 9x19mm Parabellum pistols | 155 mm | 191 mm | Shorter than about 90% |
| Barrel lengthAmong 569 9x19mm Parabellum pistols | 79 mm | 105 mm | Shorter than about 90% |
| Magazine capacityAmong 571 9x19mm Parabellum pistols | 13 | 15 | Holds fewer rounds than about 70% |
Answers
Questions about the Smith & Wesson M&P 9 Shield Plus
How much does the Smith & Wesson M&P 9 Shield Plus weigh?
The Smith & Wesson M&P 9 Shield Plus weighs 507 g (1.12 lb) empty.
What caliber is the Smith & Wesson M&P 9 Shield Plus?
The Smith & Wesson M&P 9 Shield Plus is chambered in 9x19mm Parabellum.
How many rounds does the Smith & Wesson M&P 9 Shield Plus hold?
The Smith & Wesson M&P 9 Shield Plus holds 13 rounds, fed from a detachable box magazine.
How long is the Smith & Wesson M&P 9 Shield Plus?
The Smith & Wesson M&P 9 Shield Plus is 155 mm (6.10 in) long overall, with a 79 mm (3.11 in) barrel.
Who makes the Smith & Wesson M&P 9 Shield Plus?
The Smith & Wesson M&P 9 Shield Plus is made by Smith & Wesson (United States).
When was the Smith & Wesson M&P 9 Shield Plus introduced?
The Smith & Wesson M&P 9 Shield Plus was introduced in 2021.
How does the Smith & Wesson M&P 9 Shield Plus operate?
The Smith & Wesson M&P 9 Shield Plus uses a short recoil action, and its firing mechanism is striker fired.
Compatibility
Which parts fit this firearm
Studio
Every part that mounts on this, resolved
Not a list the maker typed out: the answer comes from the mounts this firearm exposes and the interface each part needs, so it stays right when either one changes.
- Every part that mounts on any firearm in the catalogue
- Interface standards, platforms and fit overrides
- The same answers through the API and the MCP server
Requires a signed-in GunSpec account on the Studio plan. The answer is computed per part, so it is not part of the public record.
Provenance
What the record holds
Every figure above was taken from one of these pages. The confidence reflects how much of the record came from a page a claim can be checked against.
In service
- U.S. Civilian Concealed Carry
- United States
Provenance
Confidence in this record
90%
Stockists
Where to buy
Offers link straight to the shop. GunSpec never takes the order.
No shop has listed this firearm yet
Stock and prices come from the shops themselves. If you sell this firearm, you can list it and it appears here.
List a firearmMCP
Ask an assistant about it
The same record, reached the way a person asks for it rather than the way a program does.
Ask GunSpec
Works with
Point an MCP client at GunSpec and it answers from the catalogue rather than from memory. A free key covers the read tools.
API
The call that returns this record
The same fields, in the same units, from the same endpoint the page reads.
curl --request GET \ --url 'https://api.gunspec.io/v1/firearms/smith-wesson-m-p-9-shield-plus' \ --header 'X-API-Key: your_key'{ "id": "smith-wesson-m-p-9-shield-plus", "name": "Smith & Wesson M&P 9 Shield Plus", "manufacturer": { "id": "smith-wesson", "name": "Smith & Wesson", "countryCode": "US", "foundedYear": 1852, "website": "https://www.smith-wesson.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-02-11 23:44:40", "updatedAt": "2026-02-18 03:40:48", "version": "6e259a578cb1b21d72610d761d652c983ff25806b9e736e2db8d2938596e9202" }, "category": { "id": "pistol", "name": "Pistol", "description": "Handguns designed to be fired with one or two hands" }, "country_of_origin": "US", "year_introduced": 2021, "barrel_length_mm": 79, "weight_empty_g": 507, "action_type": "short_recoil"}