Start With Two Revolvers On Level 1:

For this cheat to work the cheat:kamikazie(bullets blow up) must be enabled! Talk to Al and keep doing so umtill the other officer says: sir,were in. Then stand in the doorway of the entrence to the building face to the outside an shoot the guy on you right, you will not fail the mission, and then walk over to his dead body and pick up his gun. At last you have a revolver! Now you have two !