Depends on the type and application.
I found a really good site that holds the information about really good Gunsmithing schools in Michigan. http://www.technical-schools-guide.com/michigan-gunsmithing-schools.html
It is not mentioned in the question as to which area is local to you. But in U.S. the Trinidad State in Colorado offers good gunsmithing courses. National Rifle Association also offers good short term gunsmithing courses. Also you can take online courses from http://www.americangunsmith.com/
Gunsmithing is when a person can repair, rebuild and restore a gun. To become a gunsmith, you will need to take classes. Penn Foster offers a course in gunsmithing.
"Yes, there are some gunsmithing schools near Boston. One of them is the Institute of Tech in boston. This school has many classes such as gunsmithing. This school also has classes on other subjects."
H. E. MacFarland has written: 'Gunsmithing Simplified' -- subject(s): Gunsmithing
Making and repairing firearms.
I have researched this topic for you and found that there are indeed online gunsmithing schools. Some that you may want to consider are Penn Foster Career School and Ashworth College which both offer online gunsmithing courses.
Metalurgy
Yes, aluminum is a good thermal and electrical conductor.
No. Aluminum is a very good conductor of heat.
Ralph T. Walker has written: 'Black powder gunsmithing' -- subject(s): Gunsmithing, Muzzle-loading firearms
Yes, being a metal, aluminum is a good thermal conductor.