Should be no problem at all, I made a 1/2X28 to 9/16X24 adapter from a std. AR flash hider that was really pushing the threads cutting into each other and it has worked fine, going to the larger 5/8 OD should be no big deal.
Thanks
I finally got my machinest guy to understand what I wanted, and he's in the process of making one. I'm still waiting for my tax stamp ( been 7 weeks ). My can is sitting at my dealer.
One shot