I have a Hawken rifle equipped with a metric nipple (M6 x 1) that has lost it's grip. Not sure if its the barrel or the nipple (or both). I want to drill and tap the barrel for a 1/4 - 28 thread (like T/C Hawken) and I'm looking for direction on who can perform this type work? I'm in the Lexington/Winchester area. Does anyone know of anyone that can do this kind of work correctly in my general area? Thanks in advance for any information!