There’s not been a lot of technological development in the field of using propellant to send hot lead at someone over the past 70 years.
Compare a rifle from WWII with a modern rifle, then do the same with a plane. Planes have a whole bunch of new technology to integrate. Firearms are still just firearms. They’ve moved to intermediate calibers, but that’s the main thing.
The most significant development in firearms is the proliferation of optics. Those drastically improve lethality, especially in the stress of combat.
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