The 2nd Amendment is a Nonsensical Paradox
What would you say to this. A major religious institute dictates the following as far as discussing philosophy.
"A collective of higher Learning and Thought, being necessary for the advancement of civilized society and reduction of human suffering, the right of the students to discuss Philosophy, shall not be infringed."
Not everyone is going to come up with some groundbreaking new philosophical idea that propels their society into the future and ends all suffering, but they have a right to try. Or perhaps contribute unintentionally.
A logical argument I heard was it is much harder to invade or overthrow a nation state when all its citizens are armed and content with the society enough to defend it. Some would go further and say "there is a gun behind every blade of grass" or even "the entire United States civilian populace is a standing army of 300 million."
That said, when a word is Capitlized liked 'arms' are in this case there is usually some defined meaning to it. Like in contracts for example. A surface-to-air missile system in your backyard would probably not apply for example.
No you cannot just shoot people as this is against not just an amendment but the Constitution itself, Life, Liberty, Pursuit of Happiness. If you do so intentionally you would probably get charged with murder. If you and your friends happen to be drunk and camping, shooting off guns and someone in the distance is fatally struck you would probably get charged with manslaughter and improper handling/misuse of a firearm and maybe even lose the right to have one.
An important thing to realize about all of this is that the Constitution is a 'living document' meaning it has and is supposed to be changed as society does. Often some in the majority get overly comfortable in this fact and some even believe it only applies to them. This is not true. A Chinese-American, or several million have as much right to utilize the democratic process to add, remove, or omit any or all amendments, provided they are not acting under the auspices of a foreign government, as any American. It is essentially civilized and well-regulated mob rule and if this voting majority ever changes either in belief or some other way, so would the laws governing the land.