Badger Ordnance had a whole bunch of these made up and dropped a video of the manufacturing process on youtube.
They are not on his web site so give them a call at 816 421 4956 and pick up a few sets.
I’m adding a new non- 180 part to my site if anyone is interested. BRN-10 pistol grips.
This is not my design but I have been given permission to print and sell these through my site.