:-XDepends how harsh your GM is.
If you're using a valid Sin, with valid Licenses and Registered firearms, then here's the sequence of events from a crime scene.
'We recovered this bullet'
'Run it to forensics'
'....'
'Ballistics match to registered firearm RFID 123897462349786'
'Check it with the Department of Firearms'
....
'Weapon registered to Trent Smith'
'Run him through the DMV'
.....
'Trent Smith's listed address is 555 Mockingbird Lane, and he drives a Blue Cadillac registered 3563452341234
'Put out an APB on the car, get a KE-spider to confirm the current location on Mr.Smith, and feed the information to the patrol car. We're on our way.
....
Shortly, at 555 Mockingbird lane:
*Knock*Knock* Police!
Same results will apply for Hair follicles, skin samples, blood, fingerprints or any of the other biometrics that form part of your SIN.
At the very least, matching these at any crime scene will label you as a person of interest, with all the extra scrutiny that provides.... not very conducive to shadowrunning...