You don't need to mill the slide, the plate for the Vortex Viper fits perfect and sits lower than any other options.The only thing that is giving pause on purchasing a PDP is that I hate multi-optics ready systems (all manufacturers). I hate adapter plates. And I want the optic to sit as low and secure as possible. I would rather have a non optics ready slide, so I can get it milled for a specific footprint.
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