Here is a look back at the Metal Storm MK5, a 36-barreled stacked projectile volley gun that has the highest rate of fire in the world. The prototype array demonstrated a firing rate of just over 1-million rounds per minute for a 180-round burst of 0.01 seconds (~27,777 rpm / barrel). Firing within 0.1 seconds from up to 1600 barrels (at maximum configuration) the gun claimed a maximum rate of fire of 1.62 million RPM and creating a dense wall (0.1 m between followup projectiles) of 24,000 projectiles. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one showing what happens when you light 10,000 sparklers at once.