I'm just the oppisite - if I want the safty on, I'll put it on. That said, if it didn't come with one you'll defintiely want someone who's done it before. The small U channel that houses the arm going from the safty lever to the triggers must be inletted to an exact spot at the right angle. Brad Bachelder in Mi does such work. 1-616-459-3636 if you want to call. Paul