Yes, the major diameter for the 1/2 x 28 is .500"
and the minor diameter for 5/8 x 24 is.5799"
as long as the OD of the flash hider is big enough, it should be a simple task.....
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: McLarenRoss</div><div class="ubbcode-body">iirc the cuts around the circumference are too deep to thread the ID 5/8. Dont have one handy to measure though. </div></div>