I recently bought a £300 beast of an airsoft gun, full metal M&P15. So me and my friend decided to ambush another few friends that were coming up to my house. So much fun!
It was filmed through my GoPro with its stupid case on so you can't really hear much... and it has a really high rate of fire, and shoots at around 400+ FPS so that's probably why you can see any BB's coming out of it