Masterpiece Arms ESR/Matrix Chassis Black Cerakote Competition Side Rail Kit COMPSIDERAIL-MLOK

I purchased the side rail kit and internal weight kit together. Fit, finish and quality were excellent as to be expected from MPA. My dissatisfaction is with the mounting hardware and mounting design. To use together, the screws go through the side rails and into thread into the weights. The screws included in the kit are too short. There is nothing to locate the side rails so they must be aligned by sight and feel. Because of the gap in the weights, loosening one side will cause the other side to be loose. Also, the oval tabs for the screw heads do not align easily. Checked with a friend who bought them and experienced the same issue. Very poorly executed. I expected more from MPA