The Glock 19 MOS Gen5 adds the Modular Optic System to the Gen5 compact platform, pairing the most popular carry pistol in the United States with factory red-dot compatibility. The MOS slide accepts multiple adapter plates for Trijicon RMR, Holosun, Leupold, and other optics without requiring custom machining. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 15 Year introduced: 2017, Austria Weight: 23.99 oz Overall length: 7.36" Status: Active Intended use: Law Enforcement, Concealed Carry, Competition