Designed for the MPA BA Comp Chassis, the Side Rail Kit delivers greater stability when shooting “positional” in PRS or NRL type competitions. The Side Rail Kit increases the bottom of the forend’s width by roughly 75% - this makes the rifle more stable when shooting off positional bags. The radius section on the bottom of the rails provides a more comfortable grip of the fore-end when moving and changing positions. The side rails are compatible with the MPA internal weights and Gray Ops CNC Side Rail Weights, available for purchase separately. System includes: Left and right side rail8 “t-nuts”8 fasteners for attaching the rails to the nuts8 fasteners for attaching to the MPA Internal Weight System. Masterpiece Arms BA/BA Comp Chassis Competition Side Rail Kit COMPSIDERAIL in Black