The Glock 45 MOS (Modular Optic System) is a compact crossover 9mm pistol that combines the full-size frame of the Glock 17 with the compact slide of the Glock 19. It features a 4.02-inch barrel and a standard magazine capacity of 17 rounds. This design provides a perfect balance for both duty use and concealed carry. The Glock 45 MOS includes an optic-ready slide for easy mounting of red-dot sights and modular optic mounting plates, making it compatible with various popular optics to enhance accuracy and target acquisition. General features of the Glock 45 MOS include Glock's Safe Action trigger system, ensuring a consistent trigger pull with three independent safety mechanisms. The durable polymer frame has an ergonomic grip with textured surfaces for better control, and the front and rear slide serrations improve handling. Additionally, the pistol has an accessory rail for attaching tactical lights or lasers. Favored by law enforcement, military personnel, and civilian shooters, the Glock 45 MOS offers reliability, ease of use, and the modern capability to mount optics, making it an excellent choice for defensive, tactical, and everyday carry applications. Weighing approximately 24.52 ounces unloaded, it is designed to perform reliably under various conditions.