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I would say a T1, T2, H1 would work best. I use a Bushnell TRS25 which is basically identical but on a budget. Co-witnesses with the flip up sights on my factory target model, cant say if this would be the same on the diopter model with your rail...
I got rid of my swiss arms many moons ago but IIRC co-witness is futile with the standard model. I used to run the 9" model with an aim point comp M2 like over 10 years ago. The front site 'hood' will obscure the sight picture too much. Pretty much no way out unless you have the front site hood removed
If you go with the route of removing the front site hood, aim point T with the factory low mount or trijicon RMR will probably give you the best chance of success. The standard co-witness mount for AR will be too high.