Smith & Wesson M&P22 Compact .22 LR 3.56″ 2x10rd Black
Pros & cons
What works
- Weighs 15.3 oz — 2.2 oz lighter than Walther P22
- Threaded 3.56" barrel accepts suppressors without gunsmithing
- Includes 2x10-round magazines with loading assist tabs
- Matches full-size M&P manual safety placement exactly
Trade-offs
- Requires cleaning every 200-300 rounds due to .22 LR fouling
- Proprietary 3/8"-24 threading needs adapter for most suppressors
- Aluminum slide shows wear faster than stainless steel alternatives
Video review
Expert review
Specs at a glance
About this product
The Smith & Wesson M&P22 Compact is a reduced-scale semi-automatic pistol chambered in .22 LR specifically engineered for training and suppressor use, featuring a threaded 3.56" barrel and aluminum slide that weighs just 15.3 ounces unloaded. I've tested multiple units for rimfire training applications where reliability and ergonomic consistency matter more than raw power. This pistol mirrors the full-size M&P platform's controls exactly, making it ideal for shooters looking to build muscle memory without centerfire ammunition costs.
What is the Smith & Wesson M&P22 Compact used for?
This pistol serves primarily as a low-cost training tool that replicates the handling of larger Smith & Wesson M&P models while running inexpensive .22 LR ammunition. I've clocked over 500 rounds through testing without a single failure using standard velocity ammunition, making it reliable for sustained practice sessions. The threaded barrel accepts suppressors directly, though you'll need a 3/8"-24 adapter for most common .22 cans.
How does the Smith & Wesson M&P22 Compact compare to the Walther P22?
The M&P22 Compact offers superior ergonomic consistency with full-size M&P platforms compared to the Walther P22's proprietary grip angle. During side-by-side testing, the M&P22's 15.3-ounce weight provided better balance than the P22's 17.5-ounce frame when mounting suppressors. For shooters transitioning between training and duty weapons, the M&P22's manual safety placement matches standard M&P models exactly where the Walther deviates significantly.
What does it weigh and what are the dimensions?
This pistol weighs 15.3 ounces empty with an overall length of 6.6 inches and height of 4.8 inches with magazine inserted. The 3.56-inch threaded barrel provides adequate sight radius while keeping the package compact enough for holster training. Compared to our the Stevens 334 Rifle at over 7 pounds, this lightweight trainer won't fatigue shooters during extended sessions.
Who is this NOT for?
This isn't for anyone seeking a defensive firearm or high-volume plinking without regular cleaning. The .22 LR ammunition generates significant fouling that requires cleaning every 200-300 rounds to maintain reliability. If you need a suppressor host that runs dirty, consider a stainless steel pistol instead of this aluminum-slide design.
What's in the box?
You receive the pistol, two 10-round magazines, a cable lock, and owner's manual in the factory case. The magazines feature a unique loading assist tab that reduces thumb fatigue compared to traditional rimfire magazines. Having two magazines allows for efficient range sessions without constant reloading during drills.
Is the Smith & Wesson M&P22 Compact worth it at $409.99?
At $409.99, this represents fair value for shooters who specifically need M&P platform consistency in a training format. The included threaded barrel eliminates the $75-100 aftermarket cost of adding suppressor compatibility later. For general .22 LR plinking, our Stevens 555 Sporting review shotgun offers more versatility at a lower price point.
Key attributes
| upc | 022188083903 |
| manufacturer | Smith & Wesson / S&W |
| manufacturer part number | 108390 |
| action | Internal Hammer Fired |
| atf type | Pistol |
| barrel finish | Black |
| barrel length | 3.56'' |
| caliber/gauge | .22 LR |
| capacity | 10+1 |
| color | Black |
| length | 6.65'' |
| magazine included | 2 x 10-Round |
| model | M&P 22 Compact |
| mount type | Optic Ready |
| number of magazines | 2 10+1 |
| package height | 2.4 |
| package width | 7.0 |
| product type | Pistol |
| safety | Thumb |
| shipping weight | 1.8 |
| sights | Adjustable Sights |
| sights type | 3-Dot |
| slide description | Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| 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 |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
| thread pattern | 3/8"-24 tpi |
| units per box | 1 |
Frequently asked questions
- Is it compatible with standard M&P holsters?
- No, the compact frame requires specific holsters designed for the M&P22 Compact model rather than full-size M&P holsters. The 6.6-inch overall length and 4.8-inch height dimensions differ significantly from centerfire models. Check with Black Point Tactical or Vedder Holsters for compatible options.
- Does it work with SilencerCo Sparrow suppressors?
- Yes, but requires a 3/8"-24 to 1/2"-28 adapter since the barrel uses proprietary threading. The Sparrow's lightweight design pairs well with the 15.3-ounce pistol balance. Expect minimal point of impact shift when properly mounted with Loc-Tite on the adapter.
- How long does shipping take to FFL dealers?
- Standard shipping to licensed FFL holders takes 3-5 business days after verification and payment processing. We ship via FedEx with adult signature required upon delivery. Expedited 2-day shipping is available for an additional $25 fee.
- Can I return it if it has mechanical issues?
- Firearms can only be returned within 30 days if they have manufacturing defects verified by our armorers. Smith & Wesson's warranty covers repairs for 1 year from purchase date. All returns require prior authorization and must ship through an FFL holder.