Matrix- The one rest that does it all. Ulta rigid 2-piece sliding frame adjusts to fit any gun Innovative new spring loaded elevation system allows for fast one handed, no wobble adjustment Open central channel accomodates detachable magazines and lever action guns Convenient storage compartment lid doubles as a handgun base The highly versatile Matrix combines great new features and rock solid stability in an affordable rest. Central tot eh design is the innovative, ultra rigid U-channel frame, quickly adjusting in length for the perfect fit with any gun while remaining perfectly stable. The two piece sliding frame incorporates an open central channe Mfg: Caldwell Shooting Supplies