SmartRest Cradle for Quad Rest 3The Cradle for Quad Rest 3 is a plug in system that allows for a cradle to be mounted on to the Quad Rest 3. It is an upgraded support system which supports the front and rear of the firearm for extra support and accuracy. You can choose to add on a strut support system. The strut support system enhances the experience of using the cradle. It is an excellent add on. Note: For large capacity magazine firearms and pistol grip stocks refer the gun clamp