The M9A1 is an updated variant of the original M9, incorporating a Picatinny accessory rail, checkered frontstrap, sand-resistant magazine, and improved coating. Developed after lessons from combat operations in Iraq and Afghanistan, it was adopted by the USMC and various US military units before eventual replacement by the SIG M17. Type: Pistol Action: Semi-Automatic Caliber: 9mm Parabellum Capacity: 15 Year introduced: 2006, Italy Weight: 34 oz Overall length: 8.5" Status: Active Military use: Yes Intended use: Military