The Glock 41 Gen4 MOS is the long-slide .45 ACP Glock with factory MOS optic cut, featuring a 5.31-inch barrel for competition and a factory rail. The G41 was Glock's answer to demand for a competition .45 ACP platform to match the G34's role in 9mm. MOS cut enables direct optic mounting. IPSC Standard division competitors and IDPA ESP shooters use the G41 for .45 ACP power factor. Type: Pistol Action: Striker-Fired Caliber: .45 ACP Capacity: 13 Year introduced: 2014, Austria Weight: 27.1 oz Overall length: 8.9" Status: Active Intended use: competition