Making it is not a problem... finding machine time to make it is...
I have 1200 Receiver extensions for AR Style rifles that need to be made first. When that is done, I may hammer out a few more of these things.
lets see how work goes!!
As far as sharing files and prints, I am bound by my work contract to not do that. People in the defense industry frown on shared documents no matter what it is.
It's a super simple part though, if you have a caliper, and both parts, it would be easy for any machine shop to make.