I think I have narrowed it down to the Sig Romeo5 and the Holosun 403b.
Also looked the Primary Arms linked below but it doesn't seem to have the "shake to wake" feature of the other two plus there is the added expense of purchasing a riser separately.
https://palmettostatearmory.com/sig-sauer-romeo5-1x20mm-red-dot-sight-black-r52001.html
https://palmettostatearmory.com/holosun-micro-sight-dot-reticle-with-shake-awake-hs403b.html
https://www.primaryarms.com/primary...ttons-and-up-to-50k-hour-battery-life-red-dot
Also looked the Primary Arms linked below but it doesn't seem to have the "shake to wake" feature of the other two plus there is the added expense of purchasing a riser separately.
https://palmettostatearmory.com/sig-sauer-romeo5-1x20mm-red-dot-sight-black-r52001.html
https://palmettostatearmory.com/holosun-micro-sight-dot-reticle-with-shake-awake-hs403b.html
https://www.primaryarms.com/primary...ttons-and-up-to-50k-hour-battery-life-red-dot