Sporting goods store or gun shop.
I depends on what you mean. If you mean a license to own a gun, in the U.S. you don't have to have one, except in a few states. If you mean a license or permit to carry a gun, you normally can't get that at a gun shop or sporting goods store. In states that require training to get a permit, you usually have to go to a certified training school.
yes, you can and need a license to own an airsoft gun in nyc.
I don't think you have to have a license to work on guns, but I'm not sure about that. To manufacture guns, you have to have a manufacturers license. Check with the BATF for more information.
a license
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?
No set number. But if you are "engaging in the business " of buying and selling guns, you need a dealer's license.
No, but a toy license would be acceptable.
Yes you need a valid state license to purchase any guns.
Depends on where you are, and how recently.
Depends on where you are- and you did not tell us where. Sorry.
If you have a license as a gun dealer, along with business license and meet zoning laws.
In order to sell guns in the US as a business, you must be licensed as a Federal Firearms Licensee, with an 01 Dealer license. Unless the head shop has such a license, and they are selling guns as a business, they would be in violation of Federal law.
The agency that issues the license will tell you.