Glock 40 Gen4 MOS is the long-slide Glock 10mm with a 6.02-inch barrel and factory-drilled optic mounting system. Designed explicitly for handgun hunters who need mounting flexibility and maximum velocity. Type: Pistol Action: Semi-Automatic Caliber: 10mm Auto Capacity: 15 Year introduced: 2015, Austria Weight: 35.27 oz Overall length: 8.98" Status: Active Intended use: Hunting, Competition, Defense