I’m interested in buying a no longer produced Barrett Fieldcraft. The chambering and barrel length that I’m looking for is somewhat of a unicorn with a threaded barrel. I found a good deal on the barrel length and chambering that I want but it’s non threaded and .585 dia at the muzzle. The factory rifles that were threaded have more steel at the muzzle for the threading and shoulder. Would it be possible for a good smith to add a “collar” fitting to the muzzle of a stainless barrel so that it could take 5/8x24 threaded suppressor and not be cost prohibitive Vs. having to rebarrel it?