‘Technically’ they did. They were an arme populace in the beginning, then disarmed as part of / early in the takeover as is happening here now.
But in the sense you mean, that’s true. They havent.
The track of history shows that every Communist regime has followed this sequence, in relation to subjugating a country:
1. Gun registration
2. Confiscation
3. Subjugation
Up until the point where all the guns are surrendered, it's all politics. Once that's accomplished, there's no need for a political structure anymore, and one party becomes the all dominant force which rules the land. Dictatorship is secured, and all dissent is crushed through violence and murder.
Western countries that have been disarmed are at the mercy of their ruling political class. I personally don't see how they can avoid eventually descending into totalitarian barbarism, because 'evil never sleeps'.