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

[Devildog0451]

No is the answer. 320 Legion is awesome and large. The 507K is so small, I’d hold out and get something more fitting for its size. You can get a plate for it though from one of the vendors.

[sigstroker]

Originally Posted by 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

You have to be careful because there are/were about a dozen Romeo's.

Romeo 1 specifically is obsolete and proprietary. I've heard of an adapter plate to a different platform, but you're otherwise out of luck.

[Dr. Peter Venkman]

Legion uses a Romeo PRO footprint. Your 507K will not work that. That's a compact optic to begin with. Get a 507C and a plate if you want an RMR footprint, or just used Sig Optics.

[Click Boom]

Legions used Romeo Pro / DPP patterns, but as of somewhat recently they also can take RMR's.

OP which one is yours?