Wow, we've made a movie typical moviegoers might actually want to go and see in sufficient numbers to offset its production budget! What an innovative concept [Edit: No, wait, it's a New York-based production company. Forget I said anything. Sigh.]
Now, by the look of the manky attempt at interactive lighting on his hand and the front grip of the weapon, this is a dropped-in muzzle flash:
But if it is, they've cleverly simulated the rolling shutter on the Alexa (on which it was shot) chopping the extremely brief flash in half. Am I wrong about that interactive lighting, or is this a clever bit of reverse psychology designed to throw muzzle flash enthusiasts like me off the scent?
Phil "Currently Doing This Stuff A Lot Himself" Rhodes