Nope! the dark section which is the track and the silver part that the ball head is mounted on (the carriage) i bought from a company.
The feet at the end is what i made myself, i measured the end of the track and came up with a design on autocad, drew it up and printed out a copy. Cut out that shape then traced it on some aluminum. cut along the lines with a jigsaw and then sanded to dress it up. Drilled and tapped the holes on each end and installed it with lock washers and Stainless hardware.
Here's a little demo reel of the slider before i had the ball head on it