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Hard to say, as forward bells are different in size compared to the lens. I have a markii g contour barrel with a 4-12x40mm banner with adjustable objective with lens cover. I use weaver medium rings and no. 16 bases and it just fits. So i would say use weaver high rings and your good especially if you have a heavy barrel. Weaverhas a ring height chart on their site which provides measurements.https://imgur.com/gallery/iOSAV
Pretty sure you want high rings for that set-up. If you add a rail (EGW for example) you might get away with a MED pair...as the rail elevates the ring mounting.