Chaingun makes two sounds firing single bullet

The chaingun in Doom, like its predecessor in Wolfenstein 3D, normally fires an even number of bullets each time the trigger is pulled. When only one bullet remains in the player's inventory, of course, only one bullet is used &mdash; but the firing noise (DSPISTOL) is still played twice.

Demo files

 * [[Media:d229chgn.lmp|The chaingun sound bug]] (file info) on MAP29: The Living End