That would be nice!!!!!
Bad news. Back to Fab arm. Or the newer Hatsan 14", if it ever comes to Canada.
As good as Casey at Tac Ord is; I'm not sure the Benelli Supernova barrel is even thick enough for thin-wall chokes... It's one of the thinnest barrels I've seen on a shotgun (fine for such a strong hammer forged barrel) but for the choked Benelli shotguns, they have a bell at the end where the thickness is increased.
http://tacord.com/products/performance-products/breaching-attachment/
Threads outside, doesn't act as a choke.




























