The firearms and illegal narcotics were recovered during search warrant operations based on probable cause or during intelligence-led searches of homes, according to police.
During the operations, officers arrested a probationer in the 2500 block of 38th Avenue on suspicion of illegal possession of a rifle.
Another probationer was arrested at a home in the 8700 block of A Street for alleged possession of marijuana for sale.
Police said officers recovered three shotguns as well as more marijuana and methamphetamine at a home in the 800 block of 36th Avenue and arrested a suspect for possessing the firearms and narcotics.
The search warrants are part of the Oakland Police Department's short-term crime reduction plans designed to target specific criminal activity, according to police.
