What does Jesus Christ and his authorized prophets believe about the right to keep and bear arms? Consider these passages:
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. (US Declaration of Independence. 1776)
We are all born with a right from our Creator to life and liberty. Because we have a God-given right to life, we also have a right of self-defense.
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A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed. (Constitution of the United States of America, Bill of Rights, Amendment II)
Because arms are essential for defending our lives, we have a right to bear arms.
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And for this purpose have I established the Constitution of this land, by the hands of wise men whom I raised up unto this very purpose, and redeemed the land by the shedding of blood. (Jesus Christ as recorded in Doctrine and Covenants 101:80)
Here our Savior Jesus Christ who gave us these rights of self-defense and bearing arms tells us that he inspired the Constitution and Bill of Rights which guarantee those rights.
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I am hereby resolved that under no circumstances shall the freedoms guaranteed by the Bill of Rights be infringed. In particular I am opposed to any attempt on the part of the federal government to deny the people their right to bear arms, to worship, and to pray when and where they choose, or to own and control private property. (Ezra Taft Benson, a prophet of God. The Teachings of Ezra Taft Benson, p. 617)
And here an authorized prophet of Jesus Christ tell us the government must not deny these rights to us, his children.
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Others have a different opinion. Of course. Satan rages in the hearts of men in these last days. They value their own opinions above those of the Lord. All they can do is protest and state their contrary opinion. But the truth cannot be successfully refuted.
The Iron Rod 
Notice that the anti-nephi-lehies buried their weapons voluntarily because of a covenant that they had made at the time of their baptism due to the bloodthirsty and violent lives they had lived up to that point. And they certainly did not bury the weapons their sons used when they became the Stripling Warriors.
Therefore, I think the example of the anti-nephi-lehies is more rare than you suggest. Many places in scripture we are commanded by God to defend and protect our families. The Proclamation on the Family says that is a father and husband’s responsibility. The example of Captain Moroni and Mormon in the Book of Mormon and Gideon in the Bible are as important as the example of the parents of the Stripling Warriors. And I cannot tell because history is always incomplete, but I think the number of times we are required to defend ourselves by force of arms is much greater than the times we should bury our arms in the earth. Are we not sworn to protect and defend the Constitution. I know that those who have ever served in the military are, and most of those who hold public office. When we fail to defend ourselves and our families we encourage evil.
I am a former Marine and excellent marksman who owns firearms. But I have not fired one of them in many years because of lack of interest. It is just not one of my hobbies. Could anyone suggest that I am living by the sword because I have weapons? I don’t think so.
We most certainly have a right to bear arms. But we musn’t, as the Savior said, live by the sword. “Those who live by the sword, die by the sword,” he said to Peter. Look at how many people are irresponsible with their guns, who kill people in anger with them (the same goes for knifes, hence why gun control can’t work). So, yes, we have the right to bear arms. I oppose gun control. However, I also believe more responsibility needs to be taught in society and that guns should not be thought of as the end al to end all. There is a time to take up arms like the Nephites, but their are many more times to bury weapons of war like the anti-nephi-lehies.