No one answer- since the need for a license is determined by state laws- and there are 50 different states- 50 different sets of laws- and that is just in the US. Other nations have other laws.
You don't need a gun license if you are 25 but if your under 25 you do need a gun license
No, you do not need a gun license to buy magazines.
You never need a license to have an Airsoft gun.
No, you do not need a license to purchase gun magazines in most states in the United States.
To get a gun license you would need to go into a gun store in the town you live in and ask for the information you need.
It depends on your definition of "expert." Many people think you can run tak one gun class and suddenly be deemed an expert. Most people that are considered experts have studied for years, and may possibly have a degree in ballistics.
yes
No.
The police found a bullet and sent it to the ballistics lab for testing.
It depends on several factors; Where you are located and exactly what you mean by "gun license." Do you mean a license to carry a gun? A license to purchase a gun? A license to build guns?
You need to tell us more about the "gun license" and for what area. There are many different gun licenses.
You need to define the term gun license. In most of the US there is no license to own a gun. Some states require a license to carry a gun. others to carry a gun concealed. There is also a license to make or sell guns. All are different and have different procedures.