I have a lightened model 7. Lighteight stock, machined bolt shroud, fluted barrel and bolt, skeletized bolt handle and mag box, and LW talleys. All up with sling and 2-7x32 scope it is 5.8 lbs. What else can be done? Its a bit of an obsession now. I was considering a titanium firing pin and aluminum bolt shroud. Where do I find these parts?