I put one of these on my Remington compact 20 and it needed the Lucy adapter. Does anyone know if putting one on the Benelli 20 requires it as well?
I have one on my 20ga m2. It does not need an adaptor. The edge of the stock where it mounts will be a little proud of the receiver. No issues at all.
I put one on my Franchi affinity 3 and used the M2 urbino and it got great!