Officers seized a firearm and 5 men were arrested on suspicion of burglary in Northfield on Friday afternoon.
Police were called when a group of men were seen acting suspiciously around a Ford Mondeo in Bartley Drive at around 3pm on Friday 21st August.
The men ran off when approached by officers. They were chased through gardens before being apprehended in Cromwell Lane.
Four men aged between 17 and 27 were arrested on suspicion of burglary.
The Ford Mondeo was found to have been stolen in Maas Road on August 16th.
A fifth man, 24, from the MG Rover the men were using, was also arrested on suspicion of burglary. A hand gun and ammunition was discovered in a search of the vehicle.
All five have been bailed while further enquiries continue.
Superintendent Paul Minor, local policing manager for Birmingham South, said: “We take gun crime very seriously and the seizure of a handgun means one more gun is off the streets of Birmingham. The car has been seized and will now be forensically examined by specialist officers.
“Our investigations now continue and we would like to reassure the local community that our fight against serious crime continues.”
People are urged to report any suspicious activity in their area by calling West Midlands Police on 101. Alternatively, call Crimestoppers anonymously on 0800 555 111.