I used a B-Square mount and the gun is so much heavier now. At around the same time the safety became inoperable. I am sending my 12 GA Nova back to Benelli but would love to hear from anyone who has successfully mounted a scope on a 12 GA Nova (non-slug) using a Weaver 423M mount. The hard part is finding a gunsmith to drill that plastic. I'm in AZ and would love to know if anyone here has had any success with this chore!