Maybe make a few extra because I bet I'm not the only person who wants to do this. I would get a bar and make as many as you can, then price out labor+materials+shipping
Has anyone tried something like this guy? https://www.wearecb.com/amfmx.html?gad_source=1&gclid=CjwKCAjw5PK_BhBBEiwAL7GTPRoSSzmcnKNY9nqtxRmf5spnytk-pd1zOTnoXq48w2cyHkBKHNBGTBoCxhYQAvD_BwE
I think it needs a 3/8-24 to 5/16-18 adapter but I can't find one.