DESTRUCTION By Gemstone Fireworks320 SHOTS. 3990g NET EXPLOSIVE. 155s OF COMPLETE DESTRUCTION. This mega compound firework provides a non stop display of noise and colour, filling the sky with exactly what you want and scratching that firework itch! DESTRUCTION is one of the largest fireworks we have in store and certainly pulls its weight! Specifications Shots: 320 Duration: 155s Bore: (25mm) Firing Pattern: Straight & Fanned Powder Weight: 3990g Noise Level: 9 10 Hazard Class: 1.