The weapon must be taken apart and no ammo is allowed to be shipped... The easiest weapon to ship is a shotgun. It is very easily taken apart.
There are many places where one can buy gun safes with free shipping. Hardware stores such as Canadian Tire and the Home Depot have gun safes for sale.
It is $207.01
In the entire U.S. there are an estimated 20,000 or more gun laws.
Yes. Cold affects seals.
The question is far to broad in scope. There are literally thousands of laws concerned in the purchase of ships and shipping.
No matter WHERE you use a gun, there are laws that govern what you can and cannot do. If you do not know those laws, please do not own a gun.
On evike.com you can use the coupon code "freeship" at checkout to get free shipping.
Most tranquilizer guns are still classed as a firearm- they use an explosive to propel a projectile. In the US, the same laws apply to shipping one as would apply to a rifle or shotgun. If crossing a state line, they generally need to be shipped TO a gun dealer.
Your question is an incorrect statement. Why do you think states must not enforce gun laws? They do.
That is too broad of a question to answer as asked. Is there some specific information you want about gun laws?
Literally, tens if not hundreds of thousands of laws. My copy of US state gun laws is about 2 inches thick. It is estimated that there are more than 20,000 gun laws in the US- and you are asking about "around the world".
Like most states, there are far too many gun laws for a brief answer here on Answers.com. However, this is a link to a review of several of their gun laws. https://en.wikipedia.org/wiki/Gun_laws_in_Louisiana