Burris Speedbead on a Benelli M2 20 Gauge

[GSLAM95]

I am pondering the idea of putting a Burris SpeedBead on a 20 gauge Benelli M2, has anyone here have one?  If so do you like the combination or is there something that seems to work better?  Thanks in advance for your input.

[BurrisOptics]

Unfortunately we don't make a SpeedBead for that gun.  We only make one for the 12 gauge. 

[GSLAM95]

That explains the lack of replies then