No. As in most states, no registration of ordinary firearms is required.
You don't. Go to the BATFE website for the proper way to mail handguns.
yes
Check with your Washington state local police departments for answer.
yes
yes
The federal government of the USA does not require you to register handguns, so if you are referring to federal laws, there are none. State laws vary. For instance, NH does not require the registration of handguns, while some other states do.does the state of Indiana require you to register a hand gun that you own?do you have to register a hand gun that you own in the state of Indiana?What are the hand gun laws in Indiana?
Possible. You need an attorney to start.
Possible- but you need to discuss with a Washington State attorney that deals in gun laws.Added: For further information and to see if you qualify see the below link:
Restrictions on owning a hand gun depends on what nation this question is being directed. In the United States the restrictions on owning a hand gun varies in each state. For example, in the state of New York, on is not allowed to own any type of gun while in Arizona one can own anything except a machine gun or army tactical weapons.
check with your state police
Most lenient would be South Dakota. Most stringent would be Washington, D.C.