Mount the Stop
This handy accessory can be mounted to the left or right side of the blade. It starts with a wood box that becomes an outfeed table. It's built to the height of the miter saw table.
Attached to the box is a board that turns into a fence.
An aluminum extrusion is mounted to the fence and a stop system is mounted to the extrusion.
A tape scale slides into the aluminum extrusion. You can get tape that faces the right side of the blade or the left, depending on which way the jig will be mounted.
Clamp the saw and the outfeed table to a single board so the two pieces stay together.