The Choate tactical stock for $220 delivered looks pretty good to me now for a budget priced prone stock. I have went through the Richard's stocks before and did the finish/inlet work, but the Choate would be so simple for my increasingly arthritic hands. The Choate stock has a built in bottom rail and I think it might be fine for an M700 SA. I love to shoot and I want to continue doing it. I have to go through the knee replacement in January but I will endure that and keep trying.