Business Idea: Fireworks Shop

[Spikedude]

Okay, so I had this idea the other day.

A person could go into a shop and build a custom firework. There's a person behind the counter, and then a customer tells him everything he wants on the 'firework' which can be things like single gas, double gas, single sleep, double sleep, single burn, double burn, shrapnel, cluster bombs, gunpowder, etc. Each thing brings the price up. When they're done, the shop worker puts it on a table and it becomes an item with stock 10. The customer then buys however many and then the worker clears the table.

The "fireworks" will be thrown like a grenade. This would give more possibilities in raids. For example, someone could be designated to run in first with a grenade that has sleeping gas, cluster bombs, and burn, then they'd break up the people in the base and injure a whole group, leaving way for their gang to raid.

What does everyone think?