Never seen a 180* fitting like that either but....
I'm thinking you could make your own using a short piece of 1/4" dia. steel tubing bent 180* and a couple of -4 AN tube nuts and sleeves. Then you would just need a male/male -4 AN union to connect the braided line to your 180* adapter. Only drawback is you need an AN flaring tool for the tube nuts/sleeves.....but I bet a local hydraulics shop could fab one pretty quick.
An easier way if your hose is long enough might be to remove or cut off the straight hose end on your braided line and install a 180* hose end. Aeroquip and Earls have this hose end in a -4 AN size but I think they only come in blue/red.