During the shootout from the flat to the roof, the suspect fires a total of 32 rounds. Of these, 24 were fired while the suspect was on the roof and he was not shown reloading. The highest capacity 9mm handgun, a CZ-75 Tactical Sport, only holds 20 rounds plus 1 chambered for a total of 21 before reloading is required.
Sebastian says the gun used to kill the judge was a 45 caliber revolver. In the photos shown on the board near him, the handgun was a semi-automatic.