sentences:  the stock) that do not deform with pressure or shift under the shear stress of the recoil from firing.This is for the goal of accurizing the rifle and (to a lesser extent) prolonging the life of the stock.The bedding process is often an aftermarket improvement and involves molding an epoxy-based material onto the stock recess to fill away the gaps within its contact surface with the receiver (known as glass bedding), and/or inserting a metal cylinders (which act as compression members) around the action screws to reduce compressive shifting (known as pillar bedding).