Aluminum Linear Motion Kit

Our team uses rails on our elevator.
The kit they are in can be found here:

The piece itself is:

We were wondering if there is any way to get these rails in aluminum. The only ones in the store are currently made of steel and we would like to have some made of aluminum. We have a way to produce identical pieces to these rails, just different material. (aluminum) Is this legal? If it is not, is there any other to way to get these aluminum rails.](

An aluminum version of the Linear Motion Kit is not currently available, though it is something we can take into consideration for future developments.

Questions regarding part legality in the VEX Robotics Competition should be directed to the Official Q&A. For reference, some similar previously answered questions can be found here and here.