ROTJ T-track alternative, need help.

I am quickly running out of time to fix my blaster for an event. I know this may be covered somewhere but I can not find zip in the search. I am stuck of the T-tracks with not a clue as what to use. I have tried to find the following with no luck what so ever. T-tracks/rubber/plastic, aluminum u-channel bar, rubber mats, T-tracked racks. I don't know what else to look for.

hmmm. i made mines from syntra strips just cut them straight.

Something like this?
T-Track - First Imperial Stormtrooper Detachment