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The SIG-LOC PRO footprint

ROMEO-X SIG-LOC Pro on P320-pattern slides

from below
ScrewsScrews from beneath the slide
Driverper SIG manual
Torqueper SIG manual
Patternproprietary

Diagram is schematic — top-down, optic front at the top — and is not to scale.

InterfaceBottom-mount, like SIG-LOC, over a longer footprint
What to knowSIG's specification sheet names this footprint SIG-LOC PRO, distinct from SIG-LOC, and sells it on P320 slides while the plain SIG-LOC goes on P365 and M17/M18. SIG publishes no statement that the two interchange, so this entry assumes they do not. Flagged pending confirmation.

Optics using this footprint

Pistols that mount it with no adapter

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