Russrep makes an aluminum one.
But for a suggestion, I think I know who your gauntlet maker was, and I had gotten a pair in what is probably similar quality, and had to make do. One of your best friends will be Bondo Glazing putty.
That helps to fill in all the seams left from the brushing epoxy in. that will make them nice and smooth, then get some of that rub n buff stuff, and it wil work wonders.
They look real good though, nice job you did with them.