Like the other respondents my bolt replacement had a speedy turnaround, and have received a new bolt with a threaded charging handle. Bolt installed we went for a range trip on Sunday last, the rifle worked well but the "new bolt handle" loosened after about ten rounds and had to be snugged up, repeatedly. The modification worked well but the application of Loctite 243 will be used by myself for the next range trip. Only six engaging threads on the handle and corresponding bolt seem to be minimal in my estimation but not much meat where they had to locate the female thread. This is not a complaint because I am happy with the rifle, more of an observation.