The Masterpiece Arms ESR/Matrix Chassis Black Cerakote Competition Side Rail Kit COMPSIDERAIL-MLOK is designed to enhance the stability and performance of your rifle during positional shooting in PRS or NRL style competitions. This side rail kit adds approximately 75% more width to the bottom of the fore-end, providing a more stable platform when shooting off positional bags. The kit includes left and right side rails, M-lok nuts, and fasteners for easy installation. Constructed from durable materials and finished with black Cerakote, the COMPSIDERAIL-MLOK ensures long-lasting performance and reliability. Masterpiece Arms ESR/Matrix Chassis Black Cerakote Competition Side Rail Kit COMPSIDERAIL-MLOK