It could be a cooper- someone that makes wooden barrels. In firearms, a person or company that makes barrels for guns.
Can someone keeo your guns from you
Nowadays? "A Machine" In previous times? "a weaponsmith", "a gunsmith".
manufacturer
NERF. who do you think makes "nerf guns"
If someone is collecting guns out of an interest in guns as artifacts or as historical objects, that is just a gun collection. If guns are being collected for military purposes, so that they will be available for soldiers, police, or revolutionaries as the case may be, that is called an arsenal.
A barrista is someone who makes coffees.
A person who makes leather is called a Tanner.
And airsoft company that makes videos and sells guns.
Salumanati
Someone who makes money can be called an employee, an entreprenaur, a business owner, successful, etc.
No one knows. Most likely someone in what is now called China