 At Memory Fireworks, everyone always says, what is the best artillery shell you've got on the market? And it's either M5 or M6. M5 is a 5-inch shell, extremely loud, huge brakes. This year is the M6, a 6-inch shell. Come and see them at Memory Fireworks. There's nothing better on the market than the Memory Fireworks Reload Expert M5, M6.