Some people say that "No civilian should have military style weapons!"
Ironically they also criticize those who say gun ownership deters oppressive government. "Oh yea, your hunting rifle is going to stand up against the government's tanks and bombs," they laugh.
And yet, guerrilla warfare is extremely difficult to defeat.
Don't get me wrong, I would not like to see the U.S. government get bad enough that a revolution is a serious option.
But even the U.S. government itself has admitted that there is a time and place to take up arms against an oppressive government. The U.S. government has armed Syrian rebels, Afghani rebels, and Libyan rebels just to name a few in recent times.
And guerrilla fighters are notoriously hard to beat. The U.S. knows that from fighting against rebels they armed, like the Afghanis and ISIS.
China also knows that guerrilla fighters are hard to beat. In fact, guerrilla resistance is responsible for the domination of the Communist Party since Mao Zedong.
Mao originally gained power by waging a years-long guerrilla campaign against the officially recognized Chinese state. The first fighters were largely farmers armed with farm tools and sharpened bamboo spears. Defections from the military helped them grow their ranks, and arm the soldiers. Their armory grew when they won battles and took the equipment of the enemy.
According to The 33 Strategies of War, by Robert Greene, Mao used a strategic armistice with the Chinese government to solidify his power during WWII.
Mao and his rebels were losing the civil war against the central state. But as Japan invaded, the two sides decided to stop fighting each other and instead focus on the Japanese. During this time, Mao was able to regroup and train his soldiers by attacking the Japanese with guerrilla tactics. Meanwhile, Chiang Kai-shek, the leader of the official Chinese army, waged a costly conventional defense against the invading Japanese.
Having suffered minimal losses, and with his fighters trained up, Mao turned his focus back to the Chinese government after World War II. Now the Communist leader controlled large swaths of China with loyal citizens who witnessed the Communist army's resistance to the Japanese.
Within a few years, the Republic of China government was pushed off the mainland and took refuge in Taiwan. Since then, the Communist Party has dominated China.
China Calls for U.S. Gun Control