I just hung up from speaking with Buck Holly, head dude at CHPWS. They have three very exciting new products, for mounting red dot optics to pistol slides. They are all V4, which reflect the fourth evolution of their product. All three products incorporate their new stainless hardware, with Torx heads, and resistant to over torquing and stripping. They will be making these products for all the pistols they support.
Product 1 is a polymer plate. Buck believes polymer has ideal properties for mitigating force on the red dot optic.
Product 2 is a metal plate.
Product 3 is a polymer plate with a polymer frame that protects the front lens of the optic, by creating offset. When you manipulate the slide by the optic, now the force will be transmitted to the polymer frame and not the front lens. These will be specific to each optic. I hope to have some pictures up soon. Their official launch is tomorrow. I have asked Buck to join this thread to provide additional information.