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.
GLOCK now offers four of the most popular pistols configured in MOS (Modular Optic System). The models that may be ordered in the mos configuration are the G34 Gen4, G35 Gen4, G41 Gen4, and the new G40 Gen4 in MOS configuration. Specifications of these models do not vary from their respective gen4 configurations.
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 reinstalling the correct adapter plate, then mounting the new sight.
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