There was a time, not all that long ago, where metal-framed guns were largely a dead letter, because the difference in manufacturing costs were so great that there just was no point in even trying to compete on price.
With the advances in CNC manufacturing over the last decades, costs have come down enough that some metal-framed pistols, like the alloy-framed Smith & Wesson M&P variants, are barely more expensive than their polymer-framed kin.
There's also this idea that a metal gun, being heavier, will shoot much flatter and faster, although the difference is usually minimal for the vast majority of shooters (and raw split times are among the most meaningless measurements in shooting.) Still, though, think of how many jillions of dollars people have spend on esoterica like tungsten guide rods in the hope of adding another ounce or two out toward the muzzle.
I, personally, just dig the fact that there are more choices out there.
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