The MPA Bag Rider with Flush Cup, weighing in at 1 pound, is based on an idea from Dave Preston, winner of the 2015 PRS. The purpose of the Bag Rider is to allow a consistent management of recoil when using a rear bag, while the Flush Cup, as conceived by Preston, is to be used when a sling is worn to provide support for the rifle during certain positional stances. Having the Flush Cup use the rear connection point on the bottom of the rifle allows the rifle to pull downward, as compared to side positioned flush cups which can trend the rifle laterally. The Bag Rider attaches to the user’s MPA BA Chassis, Comp Chassis or BA Lite Chassis through the threaded three-hole pattern in the bottom of the buttstock body. MSRP $29.99.