Thanks Mark. I feel as though I didn't make myself clear enough. The LEDs aren't to make a muzzle flash, but to illuminate the area around so we don't have to have more vfx than the flash itself. Does that make more sense? We just want the area around to see some spill when the gun goes off, (i.e. on hallway walls and the people's faces)
Technically it's only a junior thesis. Practice for a thesis, but the directors usually end up pouring in their own money. I'm just the DP, it's not like I chose this gunfight scene, it's what the director I work with chose to write about. Obviously shooting with permits and all would be ideal, but it's not always in budget.