The G40 MOS is a long-slide 10mm competition and hunting pistol featuring a 6.02" barrel — the longest production Glock barrel — with Glock's Modular Optic System cut standard. Designed for competition, hunting, and backcountry use where maximum 10mm performance is needed. Type: Pistol Action: Semi-Automatic Caliber: 10mm Auto Capacity: 15 Year introduced: 2015, Austria Weight: 35.28 oz Overall length: 9.49" Status: Active Intended use: Competition / USPSA, Hunting, Backcountry / Bear Defense