The Caldwell Stinger Shooting Rest is built with a state of the art design. Central to the design is the innovative front elevation system. It's user-friendly spring loaded" height adjustment knob allows for fast" one handed coarse elevation adjustment. The molded front and rear supports protect the gun's finish and provide just the right amount of firmness for rock solid shots. A heavy-duty dual metal frame and quick cam locks allow the Stinger's front rest to easily slide forward or backwards then lock in place. The Stinger Shooting Rest provides versatility and ultimate stability" delivering you maximum accuracy.