I’m looking to purchase a Mag Extension for my Benelli Nova Tactical with an 18.5" barrel. I’m going with a Nordic and was wondering if the 2 shot extension is the most I can get out of it without it extending past the barrel.
Also, looking to purchase the barrel mag clamp from Nordic as well. Does this clamp set up work well with the barrel and extension tube? I’ve heard it will sometimes bind the two together. Anyone experience this?
By the way, I’d measure this myself, but I’m waiting for the Benelli to show up in a few days and want the accessories to be here so I can put it all together and go blow the s**t out of some stuff at the range I call the hills in my backyard! 
