The Smith & Wesson M&P9 Compact is a striker-fired 9mm pistol with a 4.3-inch barrel, 17-round capacity, and Black Melonite finish. It weighs 1.8 lbs. 
 

Key Specifications 

• Caliber: 9MM Luger (9x19 Para) 
• Barrel Length: 4.3 inches 
• Weight: 1.8 lbs. 
• Finish: Black Melonite 
• Action Type: Striker-fired 
• Capacity: 17 rounds 
   

Detailed Features 

 
The striker-fired action has no external hammer. The polymer frame has interchangeable backstraps for grip-size adjustment. Sights are white dot dovetail front and steel low-profile carry rear. The Armornite slide finish adds corrosion resistance. The grip texture is moderate -- enough for control without being abrasive against skin during carry. 
 

Usage 

 
At 4.3 inches of barrel in a compact frame with 17 rounds of 9mm, this is a capable carry and range pistol. The M&P platform has a broad aftermarket for holsters, sights, and trigger upgrades. The interchangeable backstraps are worth using -- the grip angle and fit change meaningfully between sizes.

The S&W M&P9 Compact generates consistent positive feedback across a few themes.

Ergonomics are the most frequently praised attribute. The grip angle works naturally for most shooters, and the interchangeable backstraps let users dial in the fit. The polymer frame is comfortable to handle over extended sessions.

Reliability draws steady positive comments. Owners report function across multiple ammunition brands with few malfunctions, which is what you want from a carry pistol. Accuracy is described as good, especially for a compact platform.

The 17-round capacity in a compact package comes up favorably -- it is higher than many competitors in the same size class.

The trigger gets mixed comments. Most shooters find it smooth and predictable; some find it on the heavier side compared to aftermarket options and note the upgrade path is well-supported.

Customization is a recurring positive. The M&P platform has broad aftermarket support -- holsters, sights, triggers, and optic cuts are easy to find. Comparisons with Glock and Sig are common, and the M&P holds its own on features and reliability at the price point.