It's also important to understand that suppressors are not silencers. Most movies depict a suppressed handgun as sounding like an air rifle: that's just not the

It's also important to understand that suppressors are not silencers. Most movies depict a suppressed handgun as sounding like an air rifle: that's just not the case unless you're talking about specially built firearms (integral suppressors, no leaks for gas) with sub-sonic rounds. I am going to guess that very few crimes have the monetary pay-off to justify such an investment (and if they do, the criminals can certainly afford to purchase a CNC machine and manufacture a supresor themselves). On the other hand, a regular 9mm handgun or a .223/.308 rifle with a suppressor will still be very loud: comparable to a car's engine back firing, a tire blow out, or a firecracker. That's definitely a reduction in noise compared to a regular gun shot, but while one such noise might go unnoticed, a rapid succession of such noises certainly will.