The problem is that Benelli only does additional barrel runs at the factory a couple times a year. All the other barrels they make go on shotguns. If you want a barrel, first of all you have to see if it is available for your model and then you have to order it through your Benelli dealer. Your order has to be placed well in advance of a production run and even that will take 6-8 months. Getting an extra barrel is possible but give yourself a year to get it done, from start to finish. Some places do stock them, but not many and they don't usually last long. I waited close to a year for an extra R1 barrel, then I said f*ck it and just bought another gun(not a Benelli). Cheers,
Patrick