This is another ultimate weapon you can get which is easier than the junk weapon. You will need the G3A3 (found in the Hospital), M870 (found in the Sewers of China Town), PPK (found in the Warehouse), and M9 or M8000 (found in the Museum). Use the G3A3 as the primary weapon. Use a Super Tool to remove the Attack X2. Attach the Burst effect from the M870, the First Strike effect from the PPK, and the Double Command from the M9 or M8000. After this, transfer all of the bonus effects from other weapons onto this one to boost its attack, range, and bullet capacity. Later in EX mode, you can get weapons that have counter attacks that you can also attach to this weapon. Also, later in the Chrysler Building, you can get the FA-MAS rifle that has a base attack of 119, range of 169, and a bullet capacity of 26. Use Super Tools to attach all of your things to this weapon and you will be a killing machine.