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Building off the unprecedented success of the G19x, Glock has created the G45 MOS. This Compact Crossover combines the compact G19 slide to a full size G17 frame to provide the ultimate balance of carry comfort, grip area, and capacity. But it gets better, this model is compatible with the MOS platform allowing the use of your favorite mini reflex sight. The G45 MOS also contains all of the benefits and upgrades seen on the complete line of Gen5 handguns, from the optimized frame texture and ambidextrous slide stop to the enhanced GLOCK Marksman barrel! For duty, carry, or the range, the G45 MOS is a fantastic fit.