Mounting plate for sig 320 legion

[457F]

Do I need a mounting plate to mount a holosun 507k to a sig 320 legion?
it says it is the same pattern as the romeo but it is not clear with the mount. i dont have the slide with me at the moment or i would check.

[dousan]

Which legion or model of Romeo does your owners manual say? Sig changes stuff and there’s tons of models.
Likely won’t fit though. Sig is usually rmr or dpp pattern.

Worst case, call sig which footprint it uses.

[457F]

It says it works with rmr and Romeo 1 but I took it apart and do need a plate to be a clean fit