Remaining Components for LED COB

I am interested in: BXRV-TR-1840G-10A0-A25-S2
How can I find the remaining parts (heatsink, reflector, and so) to build a complete LED Downlight?

We are checking on the one for you.

This is what we received back from the Manufacture.

Application notes on the MFG’s product page Vesta® Series | Bridgelux, Inc. LED Lighting