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Removing the retainer fork by pulling or twisting forcefully on the firing ring allows the spring loaded firing pin to fire the percussion primer. The flash from the primer ignites the igniter holder projecting charge, and also ignites the quickmatch leading the first delay charge. The igniter holder assembly is projected from the tube by the ignition of the projecting charge. The first delay charge ignites the ignition charge and it, in turn, ignites the quickmatch leading to the first ejection charge and the first-fire charge of the first star charge. The first star charge is ejected and the first-fire charge ignites the first star charge at the height of the trajectory. The ejection charge also ignites the second delay charge, and the sequence just described is repeated: delay charge, ignition charge, quickmatch, second ejection charge, and first-fire charge. The time from actuation of the firing ring to full function of the first star is 2 to 4 seconds, and for the second 4. to 8 seconds. Burning time for the star charges is 4 to 6 seconds each.
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