Kegerator Shank

So my buddy and i inherited a unknown brand kegerator.  im trying to convert it into easier to find fittings and am having an issue identifying the parts that attach the hose to the shank.

Photo of the backend of the shank

Photo of the barb assembly  SS barb elbow, Copper Fitting(1/4 i think) and some sort of nylon washer?

If anyone has links to where i could find these fittings or even just names to what they are that would be great

Foxx calls them tower shank assembly parts. Here’s a link to more beer who carries all three pieces.