The SIG-LOC footprint
Romeo-X line on M17/M18-pattern slides
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.
InterfaceFive contact points; optic sits directly on the slide
What to knowSIG's tension-loaded answer to the same problem the RCR and A-Cut address. Currently Romeo-X only.
Optics using this footprint
Pistols that mount it with no adapter
Check a pairing
Use the fit checker to see whether a specific optic and
pistol go together, and what it costs to mount.