Do not add this to any "add everything" studios. There are four parts of the "sound animation": First, the slide locking back. Second, the clip ejecting. Third, a clip inserting Fourth, the slide releasing. Fifth, fire mode change. There are three of each sound effect, and every time you click the green flag, it randomizes each sound effect in the sequence.
I recorded all of these myself with the "Turtle Beach Ear Force PX21" microphone.
