Our optics are all IP67 rated unless you go for our RMSw or an enclosed emitter product.
If you have the Optics ready version that is cut with our SHIELD footprint and requires no interface plate.
Any model in our " C " compact line will work best with the G43X and fit the slide profile.
I think the Citadel has the RMR Cut so you will need an interface plate RMR to RMSc for it to work.
Yes, the Shield Sights Reflex Mini 4 MOA Red Dot Sight will mount directly to the optic ready slide of the 43X without the need for an adapter plate.
The Shield Sights Compact Reflex Mini Red Dot Sight model at the link below will fit the Hellcat.
https://www.opticsplanet.com/shield-sights-compact-reflex-mini-red-dot-sight.html
The Shield Sights Reflex Mini Red Dot Sight 2.0 will fit your Glock 40 MOS with the use of the #4 plate. You will still be able to use your original sights.
The Shield Sights Reflex Mini Red Dot Sight 2.0 does not feature a shake awake function. It has automatic brightness adjustment with a 2-3 year battery life.
Yes, the Shield Sights Reflex Mini Red Dot Sight 2.0 will mount directly to the RMSc optic cut found on the optics ready Shield Plus.
The Shield Sights Reflex Mini Red Dot Sight 2.0 will fit an Optics Ready model of the Canik TP9 Elite.