Police have arrested the commander of the Comanchero bikie club Milperra chapter for his role in a bomb plot.

More than 130 police on Tuesday morning raided 10 properties across Sydney, including the Comanchero's Milperra club house, where they arrested eight members on a range of drug and gun supply charges.

Deputy Commissioner Cath Burns said Jack Dippizio, the head of the Milperra chapter, was one of those arrested.

"We will allege (he) participated in and used an explosive that was going to be used in a bombing," she said.