The MPA Wedge Lock Action Screw System includes one front and one rear action screw and two sets of wedge lock washers. These are designed to be used on any MPA chassis with a Remington 700 footprint. It allows the action screws to stay at tension at all times, eliminating the loosening of action screws in the chassis.
Never have a loose action screw again. See how the system works in this video.