The nephew of jailed drug boss Tony Mokbel was arrested, charged, convicted and sentenced to eight months in prison within a matter of hours this week.

Giving fresh meaning to the term swift justice, Antonios "Anthony" Mokbel was jailed just hours after anti-bikie taskforce Echo detectives caught him with a loaded handgun on Wednesday.

Ali El Nasher (left, wearing the gold chain) and Anthony Mokbel

Mokbel, aged in his 20s, pleaded guilty at an out-of-sessions hearing in the Melbourne Magistrates Court to 19 charges, including firearms offences.

The conviction was not Mokbel's first brush with the law.