Originally Posted by
A10K
rifles and gunsmithing postdate the invention of electricity
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According to Wikipedia "Barrel rifling was invented in Augsburg, Germany at the end of the fifteenth century." And gunsmithing is older than that.
As for bicycles, certainly, lack of electricity does not eliminate mass production. Bicycles would slowly become more and more expensive. Tires and tubes would last for a while, and they make it more comfortable to ride, but as in World War II, you can ride a bike without tires, you can lube the chain with other things than Tri-Flow. So unless people got stupid, I see no reason that bicycles would not continue to exist.