Thanks FG. That's kinda how I had it figured. I have a set of Weaver rings on hand. I know what you mean about the stock. I have a Crosman Optimus and it is in a Phantom stock. My groups shrunk by 1/2 when I switched. I have another Phantom stock that I could drop the Vantage, but the Weaver rail is a big + for me. BTW, how's your accuracy?Thanks,Scotty