Depends on who made it.
100-435 USD
Not recommended
Maximum range of a .40 cal pistol is about 960 meters. ACCURATE range is about 50 meters.
Relatively small and concealable caliber with enough terminal performance to get the job done with proper shot placement
40-150
Gun shows, gun shops, want ads, e-gunparts.com
They will "fit" but they will not fire correctly, and will break when the bolt tries to push two of them at once.
100-500 usd
.40 S&W 156 dB
A Glock 22 (.40 cal) and a Glock 27 (.40 cal) as a backup.Actually the standard NYPD sidearm is a Smith & Wesson 5946, Glock 19, and formerly the SIG-Sauer P226.
A Smith and Wesson M&P 40 is a .40 caliber hand gun.