Poliuce make one of 555 arrests.

Police make one of 555 arrests.

A major crackdown on the gangs and guns behind Sydney's violent shooting epidemic has resulted in 555 people being arrested and 908 charges laid.

Senior police launched Operation Spartan in January as the city's gun crime threatened to spiral out of control.

It was stepped up over the weekend as detectives targeted bikie gangs and others behind almost 60 shootings that have played out in western and south-western suburbs this year.

Crackdown ... a policeman guards two suspects.

Crackdown ... a policeman guards two suspects.

Assistant Commissioner Frank Mennilli revealed that 555 people were arrested during the concentrated operation, which ran from 4pm on Friday until last night.

There were 908 charges laid, including 107 for drink-driving offences, 14 guns seized and 1401 intelligence reports compiled.

"While we are proud of the arrests and charges laid at the weekend, it's the new intelligence that we have gathered that will most support the goals of Operation Spartan," Mr Mennilli said in a statement today.

"Every new piece of information we collect helps us to better understand these criminals, their gangs and their methodology, which is the key to dismantling and disrupting criminal activity."