I bought a SureCycle extention for the M1, they told me it would work on the M3.
Wrong sized threads for the locking collar on the threaded end of the stock Benelli tube.
Anyone know if Benelli changed the thread sizing on the factory tubes between the M1 and the M3?
I read on a couple forum boards that the extention tube is considered to be an "imported" part.
Whodda thunk that one.....