I have several stock Remington BDL sporter barrels that I would like to have threaded for a suppressor. They had front sights on them, so could they still be threaded for a suppressor? Not really interested in shortening the barrels to remove the threaded holes, as I don't want them any shorter. Haven't taken any depth measurements, so maybe they would clean up totally and not make any difference? Anyone with any experience on these? If it matters, two are typical sporter barrels and one would be a magnum sporter.