Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get BH3DG58GZX@1 --preset rifle -o bullet-hit-concrete.wav
How it's made
Source
a bullet striking a concrete wall. The impact is a ~0.5 ms broadband crack (shock of the sudden deceleration, 2–10 kHz) followed by a short low-passed thump as the wall takes the momentum.
Body
the wall rings in dense, heavily damped stone modes (60–200 ms) plus a 80–150 Hz slab thud that lasts 30–80 ms; a thicker wall lowers and lengthens both.
Debris
pulverised cement sprays as a gritty 2–7 kHz noise hiss (0.2–0.35 s) with chip grains (3 ms noise ticks) landing over 0.4 s; a ricochet adds a fast descending 3.2 kHz to 1 kHz whine.
Envelope
crack and thump are over within 30 ms, the body in 0.2 s, the dust tail fades by ~0.45 s.