Dirty_Harry

I absolutely love this shotgun. I sold my Beretta 1301 because it didn’t fit me like this gun. That being said upgrades are hard to find. I have the regular Nova, and I want to add a couple things: 1. Sidesaddle. I don’t see anything for this gun. Recommendations? 2. Mag extension. Which is best? Nordic? Tacstar? GG&G? Also so I am not against just upgrading to a supernova for easier accessorizing, but I don’t want to if I don’t have to. PM me if you know of one for sale. Thanks in advance!