The G41 MOS adds Glock's Modular Optic System to the long-slide .45 ACP competition platform, enabling red dot mounting for open-class and optic-legal competition. Released simultaneously with the standard G41 Gen 4 at SHOT 2014. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 13 Year introduced: 2014, Austria Weight: 27.05 oz Overall length: 8.9" Status: Active Intended use: Competition / USPSA, Competition / IDPA, Home Defense