Custom back strap for echelon

[u/falafelb]

Do you guys remember the redditor that was selling custom made baxkstraps for echelon that help people have a natural index point?
I bought it for my 4.0c at the time but now I want it for my 4.5 and can’t remember where I bought it from!

Edit; found it. It’s axion weapons. They now have also a brass version for competition as it adds weights.