I have a pre ban AR-15 barrel that I would like to mate with a post ban lower. You already know my problem is the threaded muzzle. What if I were to clamp the barrel {while assembled to a pre ban lower of course} in my rifle vise and thread a nut to within a hacksaw blades width of the shoulder on the barrel to use as a guide and use a solid hard blade to very carefully cut the threaded portion of the barrel off. I would think that after doing this some lapping and cold blue should make the job complete. Any suggestions would be greatly appreciated.
Thanks, Hank
Thanks, Hank