Im a diy kinda guy and like to save my money where i can. I know stuff like blueing and sight replacement is ok, but i was considering cutting and crowning a barrel and was wondering about the laws regarding this matter. Is it legal for me to cut and crown my rifle to 16.5'' myself, not being a pro gunsmith? I saw Larry Potterfield from midway USA cut one on youtube (guy has great videos) and figured i can do it. What kind of work do you guys do to your guns? Build projects? Photos?