The tech just isn't there; hand-held guns don't benefit from a computerized firing system at all. So any smart feature on human sized guns and less will be totally removable addons, and that completely defeats its purpose.

Many tanks and planes do have smart guns. Electronic firing control with additional software features that impede firing are beneficial and totally fine at that scale.

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actionfromafar an hour ago | parent [-]

Seems it's coming though. https://en.wikipedia.org/wiki/SMASH_Handheld

	▲	numpad0 30 minutes ago \| parent [-]
		That's just a scope. Comes right off and reverts to a regular M4. Most(though not all) other smart gun attempts work in a similar fashion; the host gun works exactly as it were, except an extraneous metal bit inhibits firing. If the bit was removed or held down, it reverts to the original host gun and fires normally. As such, the extra bit is literally extraneous, irrelevant to the gun's working.