Retail Fireworks store, Pyrotechnic equipment sales, Public and Private fireworks displays, Mortar rack manufacture, Mortar tube manufacture, Electronic fireworks firing systems. Hollister Pyrotechnics makes custom mortar racks and mortar tubes to be used in the fireworks industry for launching firework shells starting with consumer ball shells up 12" professional display shells. Every item we sell is tested by the owner himself to make sure it performs to his expectations.