The M&P40 M2.0 applies the second-generation M&P improvements to the .40 S&W chambering, which dominated American law enforcement from the early 1990s through the mid-2010s before agencies began the industry-wide migration back to 9mm. The platform is mechanically identical to the M&P9 M2.0 with a wider slide and barrel to accommodate the larger cartridge. Many police departments that standardized on .40 S&W have retained their M&P40 M2.0 fleets even as newer hires receive 9mm pistols. Type: Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 15 Year introduced: 2017, USA Weight: 24.7 oz Overall length: 7.62" Status: Active Intended use: duty, law_enforcement, service