Just bought a optics ready Shield Plus yesterday. I've ordered a Swampfox Sentinel green dot for mine. It will mount without a plate. I wanted the Holosun as I have them on some Glocks, but I didn't want a plate under it. I wish Holosun would just build their slimline sights in the standard Shield RMSc footprint. I would have bought a Shield sight bit they don't do green. I will see how the Swampfox is.