The Guns Basic Examination News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Gun's basic examination to the tank room. why do we call it a tank room? >> because there is a large tank filled with water. >> reporter: i see that here. >> the purpose of this tank is to that we can discharge a weapon and acquire the bullet. >> reporter: where does the bullet end up? >> the bullet will travel through the watt aerocertain distance and drop through the bottom of the tank. >> reporter: the detective is firing into the bullet recovery tank. >> reporter: once a bullet is recovered, it goes under the microscope then tested for fingerprints. >> if there was any fingerprints that we...

Queens. >> any idea how many guns come through this on a daily, weekly basis? >> thousands come in each year for examination. >> according to the with nypd, some 9,000 guns end up in the lab. more than 3,200 of those from gun arrests, hundreds stored in a room aptly called the library. racks of weapons all makes and models kept for reference, such as a world war ii japanese pistol. >> and you can see kind of the antique look to it. the most current popular model on the streets. >> there's a high point .9 millimeter that is commonly seen. >> this one. any idea why? >> at this time. i couldn't s...