The Swampfox Kingslayer 1x22mm Micro Reflex Red Dot Sight uses the Trijicon RMR optic footprint and would require you to purchase an RMR picatinny mount in order to install the optic to your top rail.
The Swampfox Kingslayer 1x22mm Micro Reflex Red Dot Sight uses the RMR footprint. So it will not fit an EGW mount for the Leupold Delta Point Pro. You will need the EGW mount at the link below.
https://www.opticsplanet.com/evolution-gun-works-trijicon-rmr-sight-mount-1-780-in-aluminum.html?_iv_gun-model=fn-fnx
You would likely need to make use of MPN: 49513 found here:
https://www.opticsplanet.com/evolution-gun-works-trijicon-rmr-sight-mount-1-780-in-aluminum.html
These are all the same model, just different color/style reticles. The Hellcat is milled for the JP Enterprises JPoint and Shield RMSc, so you would need an adapter mount that is RMR-compatible.
Fortunately Sig has changed the mounting on the p320 xcompact, and the newer ones can mount Romeo1Pro, Delta Point Pro, and RMR optics without an adapter plate. You need to look at the precise model number of your pistol to determine if it came with the new cuts or the old one that needs an adapter. The newer version is revision 2 and will have R2 at the end of the model number. 320XC-9-BXR3-R2. Older ones do not have the "-R2" on the end and will need an adapter plate or a different slide.
The Swampfox Kingslayer has a RMR compatible footprint.
Yes, the Swampfox Kingslayer is listed as being compatible with Trijicon RMR plates, mounts and slide cuts.
You will want to use the Trijicon RMR plate which is either #2 or #6
To fit the Swampfox Kingslayer 1x22mm Micro Reflex Red Dot Sight to your Glock 19, you will need to purchase and install the Evolution Gun Works Trijicon RMR Sight Mount for the Glock 19. The adapter will replace your rear sight and allow you to install the optic. The adapter plate can be found by using the link below:
https://www.opticsplanet.com/evolution-gun-works-trijicon-rmr-sight-mount-1-780-in-aluminum.html
The Swampfox Kingslayer 1x22mm Micro Reflex Red Dot Sight is not compatible with the 605 TORO. The 605 TORO is only compatible with optics that use the RMSc or K footprint such as the Sig Romeo Zero, Sig Romeo Zero Elite, Shield RMSc, Holosun 407K/507K, Holosun EPS Carry and more.