This comes with 3-17rd magazine.

3-17 rd magazines are included, as detailed here
barneyspolicesupplies.com/smith-and-wesson/smith-wesson-mp9-m20-9mm-le-only-11882-32764

3 mags see *****Smith & Wesson M&P9 M2.0 9mm LE Only | 11882

The Smith and Wesson M&P M2.0 pistol is the newest addition to the respected polymer pistol line. This striker-fire, semi-automatic handgun is designed for sporting, personal, and professional use, introducing innovative features in nearly every aspect of the pistol, including trigger, grip, frame, and finish. Highlights of the M&P M2.0 pistol include an extended stainless-steel chassis and high grip to barrel bore axis ratio for reduced muzzle rise and faster aim recovery. The M&P M2.0 pistol further improves performance with a fine-tuned, crisper trigger, lighter pull and a tactile and audible reset.

Features
- High grip to barrel bore axis makes the M&P pistol more comfortable to shoot reducing muzzle rise and allowing for faster aim recovery.
- Proven optimal 18-degree grip angle for natural point of aim.
- Four interchangeable palmswell grip inserts for optimal hand fit and trigger reach - S, M, ML, L.
- Aggressive grip texture for enhanced control.
- New M&P M2.0 crisp trigger with lighter trigger pull.
- Tactile and audible trigger reset.
- Accurate 1 in 10” twist M&P M2.0 barrel.
- Extended rigid embedded stainless steel chassis to reduce flex and torque when firing.
- Armornite® durable corrosion resistant finish.
- *******Ships with (3) magazines.

THREE (3) 17rd magazines included with the gun. I hope this helps!

Mark, (3) 17rd Magazines are included Sir. Cheers and stay safe! gunsamerica.com/966195555/Smith-Wesson-LE-11882-M-P-M2-0-9mm-Luger-4-25-17-1-Black-Stainless-Steel-Slide-Interchangeable-Backstraps-NO-BOX.htm