Look at www.warnescopemounts.com. Their optima magnum ultra high rings will put your retical at the same height as the original A2 aperature.
I mounted a Leupold Tactical to my V-Match with these and I love them. Split ring design, solid steel, and quick detach (and they DO return to zero). Now you don't have to mess with any riser.
Best price was at Lock Stock and Barrel. See their web site www.lockstock.com for their phone number as these rings are not in the catalog. They will drop ship them from Warne for $45. (or you can buy them from Brownells for $120!)
I also like the Leoupold MK IV rings, but expensive.