The Bushnell RSX-100 Reflex Sight is not compatible with the SAR9 C. Since your SAR is not optics ready you would need to have your slide milled for an optic or find an adapter plate that allows you to install an optic.
The Bushnell RSX-100 Reflex Sight uses the Leupold DeltaPoint Pro footprint and while it is the same footprint as the RMSc footprint, it is a larger optic that will not fit your TP9SFx METE RMSc cut slide due to its larger dimensions.
The Bushnell RSX-100 Reflex Sight RXS100 uses the Leupold DeltaPoint Pro footprint. To mount it to a Taurus TX 22 you will need a compatible dovetail mounting plate for that gun. We currently do not have a compatible mounting plate.
The Bushnell RSX-100 Reflex Sight is 1.9" long but the height and width are not specified by Bushnell. For those dimensions I recommend contacting Bushnell. The Bushnell RSX-100 Reflex Sight uses the Leupold DeltaPoint footprint and will mount to the Taurus G3C TORO using the compatible TORO mounting plate. Taller iron sights will not be necessary but will most likely be needed if you want to absolute co-witness the Bushnell RSX-100 Reflex Sight and the iron sights.
The Bushnell RSX-100 Reflex Sight includes a low height picatinny/weaver mount. So as long as your SW22 uses a top picatinny rail, then this optic will fit and function as intended.
Yes, the Bushnell RSX-100 Reflex Sight has a picatinny rail compatible base and will mount directly to a picatinny rail.
Yes. The Bushnell RSX-100 Reflex Sight using the same Deltapoint Pro/Shield footprint and will mount directly to your M&P.
If you have the Optics ready Hellcat, the Bushnell RSX-100 Reflex Sight will be able to mount directly to it. If not, you will need an adaptor plate that uses the DeltaPoint Pro footprint.
Bushnell recommends contact Sig to see if the plate that comes with it Delta Point will work
Yes, it is parallax free.