This Leupold 2-Piece Quick Release Base is designed to provide you with a secure platform for mounting your scope. The base is built with the intention of being very simple to mount or detach when necessary. Made of strong metal, the base gives you a platform to place on your receiver for mounting scopes. You will be impressed with the extreme level of accuracy these stabilizing bases provide. You can remove your scope and place it back on while still maintaining the highest level of accuracy.