The Smith & Wesson M&P9 Shield Plus is a compact semi-automatic pistol chambered in 9mm, aimed at concealed carry and personal defense. The slim frame fits easily under clothing without printing, and the increased magazine capacity over earlier Shield models addresses the main complaint about the original design. 
 

Key Specifications 

• Caliber: 9mm Luger 
• Barrel Length: 3.70 inches 
• Overall Length: 6.70 inches 
• Weight: 1.25 lbs (20.3 oz) 
• Capacity Options: 10, 13, or 15 rounds (3 magazines included) 
• Action Type: Semi-Auto, Striker Fired 
• Frame Material: Polymer 
• Finish: Black Armornite 
• Front Sight Type: Night Sight / Fixed White Dot 
• Rear Sight Type: Tactical 
• Muzzle Feature: Threaded Barrel 
   

Features 

The threaded barrel accommodates suppressors or compensators for those who want that option. The flat-face trigger provides a consistent pull across the full trigger face, which helps repeatability shot to shot. Night sights handle low-light target acquisition without a flashlight. Three magazines ship with the gun — 10-, 13-, and 15-round — so you can pick capacity based on the holster or the situation. The textured polymer grip holds up in wet conditions.

The S&W M&P9 Shield Plus draws consistently positive reactions, particularly around its size and capacity combination.

Most owners pick this gun for concealed carry, and the slim profile delivers on that. The higher magazine capacity compared to the original Shield is the most-cited improvement — more rounds without a meaningful increase in bulk. Recoil is manageable for a 9mm this size, and the trigger pull comes in smooth out of the box. The threaded barrel is a practical bonus for those running a suppressor or compensator.

Build quality is generally considered solid. Ergonomics get mixed marks — the grip works well for most hands, though some shooters want more aggressive texturing. Price sits mid-range for the class; most buyers see the value when comparing features against the Glock 43X or Sig P365. Aftermarket support has grown but isn't as deep as the Glock ecosystem yet.