I have been told Benelli does not offer mag extensions for the Nova. I have been looking around for a +2 or 4 round extension. Anybody got an aftermarket version they can recommend? Looked at T. Knapp's website - these look OK, anybody tried one?
https://tp-commerce.techpro.com/tomknapp/shopexd.asp?id=127
https://tp-commerce.techpro.com/tomknapp/shopexd.asp?id=127