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The factory Glock 19 Gen3 MOS slide assembly allows you to easily convert your standard Gen3 pistol for optic mounting. Simply swap your original barrel and recoil assembly into the MOS slide. Features front cocking serrations and includes internal components.
The MOS(Modular Optic System) makes it easy to mount a mini reflex sight to the pistol's slide. Adapter plates for various optics are sold separately.
Fit Glock Gen3 only
*Does not include barrel/recoil spring assembly