20 gauge burris mount

[wolverines]

Gents,
Working on the family gun project.  I have narrowed down to the benelli M2 or 11-87.  I want to mount a burris FF3 but was wondering if I can find mounts for the 20 gauges without drilling or tapping.

[wirtbowhunter]

I wonder if this mount will fit a franchi affinity 20 ga?

[lr308]

I was able to modify a speed bead mount for a 12 ga beretta 391 for my affinity. I shot the snot out of it to check it out, its solid. Ready to open the season with it