Glock engineers have developed the Glock Modular Optic System to simplify mounting of popular optic sights without costly custom machining of the pistol's slide. Optical sights are popular in competitive shooting and are becoming increasingly popular for concealed carry, home defense and target shooters.
The Glock MOS allows the shooter to mount the sight of their choice, easily and quickly using only a few tools. The versatility of the system makes changing optics easy. Switching from one sight to another is as simple as removing the old sight, removing and re-installing the correct adapter plate, then mounting the new sight.
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