Because the Constitution does not say that cites can ban your right to bear arms when the Constitution says you have a right to bear arms, of course.
The Constitution also does not say what an arm is? And it also doesn't say when, or even if, you can lose that right. All of that was decided by the courts, not the people who wrote the Constitution.
What's in the Constitution, and what is Constitutional are two very different things. How many times must I repeat this point?
Bear Arms, not Bear Firearms. Nuclear weapons, swords, knives, cannons, tanks, etc. are ARMS.
Please tell me you are not as big an idiot as you sound? Lol. READ the Constitution and the relative passages regarding our rights to bear arms, please. Then, hopefully, you will be educated enough to participate in "constitutional" discussions and cease with the complete ridiculousness.

TIA.
I've read it. In no place does it say firearms, or what a arm is, or that you can ever lose the right to bear arms, or that said right can be limited by the government.
You are a very stupid person and I can't help you. You have no understanding of the fact that what the Constitution actually means when it says Bear Arms is decided upon by the courts. Nothing in the Constitution says you can lose the right to bear arms or that you can't have whatever "arms" you like. That all came about much later, from the courts, not the Constitution.
The implication? Guns, like nukes, could also be banned. Banning one arm is no different than banning another, if the courts say such a ban is Constitutional and they are allowed, by law and tradition, to do so.
While you might be top poster of the month, you are not top thinker of the month. Post less, think more.
Like I said, you are clueless. Lol.
The
Second Amendment (
Amendment II) to the
United States Constitution protects the right of the people to
keep and bear arms and was adopted on December 15, 1791, as part of the first ten
amendments contained in the
Bill of Rights.
[1][2][3][4] The
Supreme Court of the United States has ruled that the right belongs to individuals,
[5][6]while also ruling that the right is not unlimited and does not prohibit all regulation of either
firearms or
similar devices.
[7] State and
local governments are limited to the same extent as the
federal government from infringing this right per the
incorporation of the Bill of Rights.
The Second Amendment was based partially on the right to keep and bear arms in English common law and was influenced by the
English Bill of Rights of 1689.
Sir William Blackstone described this right as an auxiliary right, supporting the natural rights of self-defense, resistance to oppression, and the civic duty to act in concert in defense of the state.
[8]
In the twenty-first century, the amendment has been subjected to renewed
academic inquiry and
judicial interest.
[11] In
District of Columbia v. Heller (2008), the Supreme Court handed down a
landmark decision that held the amendment protects an individual right to possess and carry firearms.
[12][13] In
McDonald v. Chicago (2010), the Court clarified its earlier decisions that limited the amendment's impact to a restriction on the federal government, expressly holding that the
Fourteenth Amendment applies the Second Amendment to state and local governments to the same extent that the Second Amendment applies to the federal government.
[14] In
Caetano v. Massachusetts (2016), the Supreme Court reiterated its earlier rulings that "the Second Amendment extends, prima facie, to all instruments that constitute bearable arms, even those that were not in existence at the time of the founding" and that its protection is not limited to "only those weapons useful in warfare".
[15]