[update April 29, 2024] Unfortunately, the MantisX does not fit on the rail of the SPHINX 3000. The MagRail Universal Rail Adapter suitable for this.
The SPHINX SDP uses the Phoenix MagRail adapter .
On PHOENIX pistols (Redback, Predator and Fusion), the Mantis X can be mounted in the REVERSE mounting direction (see in the app). Otherwise, I recommend the Phoenix MagRail Adapter , which is compatible with the Redback, Predator and Fusion.