The M9A1 was adopted by the USMC to address shortcomings of the original M9. Added a Picatinny rail, improved checkering, and a beveled magazine well. Issued primarily to USMC units. Type: Semi-Auto Pistol Action: Double/Single-Action Caliber: 9mm Capacity: 15 Year introduced: 2006, Italy/USA Weight: 33.6 oz Overall length: 8.5" Status: Active Military use: Yes Intended use: Military, Duty