system
Given the following post, respond as if you're commenting on Reddit:
human
Would a metal detector be able to detect a bullet that was shot through the detector? Think airport-level sensitivity and shot from 3-5 yards away.

I got the idea from Left 4 Dead where there's a metal detector that would go off if you walk through it but not if you shot through it.
gpt
A bullet moves 200 to 600 m/s. Assume a typical detector has an active zone around 1m deep; the bullet must set it off during a period of 0.005 s. Such a sensor certainly can be built, but (speculation warning) it is unlikely that airport metal detectors are calibrated for this.