I would like to thread a barrel for a silencer, but the front sight is a 1.5" long collar that was silver soldered/ sweated to the barrel. Do i just machine away the front sight and treat the collar as part of the barrel, or do i have to heat the whole lot up untill i can slip it off? If i were to slip it off, it would expose the front 1.5" of barrel that is considerably thinner than the rest. Does anyone out here know the "correct" way of dealing with this? (Rifle is a .22 hornet) I am also reluctant to heat up the barrel as this could change the temper of the barrel.