Gravity Feeder Lower Unit?

I need to get a new lower unit tube thingy, the part the deer eat out of. The squirrels have chewed it and it just needs replacing,

It a three tube type but didn’t know if there is a preferred type yall like more or if yall like to build your own wanted to see what else is out there

Academy has some for a fairly cheap price, if you want to go with metal. Think it is the game winner brand. I have one that lasted 8 years so far.

Academy Protein Tube