the second gun belong to the victim, there are photos where you can clearly see he was packing under left armpit, the shooter was trying to grab it thats why his hand is under the victim vest and thats why he was slapped, the released photos are color adjusted so you cant see the gun, also replay the video right before the victim turns to the shooter after the agitator tries to start a fight, you can hear someone says "dont try anything or i will drop you" thats when he goes to confort the shooter. it was a complete setup