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Optics, Mounts, Rails and Sights If it aims your firearm, post about it here.

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  #1  
Old 01-24-2023, 11:49 AM
457F 457F is offline
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Default Mounting plate for sig 320 legion

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.
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  #2  
Old 01-24-2023, 8:54 PM
dousan dousan is offline
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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.
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  #3  
Old 01-24-2023, 9:50 PM
457F 457F is offline
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It says it works with rmr and Romeo 1 but I took it apart and do need a plate to be a clean fit
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  #4  
Old 02-01-2023, 2:26 PM
Devildog0451 Devildog0451 is offline
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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.
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  #5  
Old 02-02-2023, 7:20 AM
sigstroker sigstroker is online now
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Quote:
Originally Posted by 457F View Post
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Romeo 1 specifically is obsolete and proprietary.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.
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  #6  
Old 02-21-2023, 9:46 PM
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Dr. Peter Venkman Dr. Peter Venkman is offline
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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.
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  #7  
Old 02-23-2023, 2:28 PM
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Legions used Romeo Pro / DPP patterns, but as of somewhat recently they also can take RMR's.

OP which one is yours?
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