A hammer hits a chemical {fulminate, material} that ignites on impact {gun}. Fulminate ignites gunpowder behind bullet {firing, gun}. Expanding gas pushes bullet. Bullet goes down tube {barrel, gun}, which has spiral grooves {rifling, gun} to spin bullet. Longer barrel is more accurate and gives more distance. Fulminate, gunpowder, and bullet can be separate. Bullet can be in shell filled with powder, with percussion cap containing fulminate on back {cartridge, bullet}.
Practical Affairs>Military Affairs>Weapon>Gun
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Date Modified: 2022.0224