The compact crossover pistol G45 MOS in 9x19mm combines a compact slide with a full size frame and has all the benefits of a Gen5 model. The slide in MOS configuration makes it easy to mount a reflex sight on the pistol"'s slide without the need for a new slide or separate mounting system. Utilizing the design and engineering GLOCK developed for its military pistol (G19X), combined with operator and worldwide Law Enforcement specifications.