This is a clacking sound caused by the snapping of a large plastic clothespin. Recorded with a sound devices mixpre3ll and a matched set of audio technica at943 microphones.
Believe it or not, this was made with a soda bottle cap. I made it for a zombie survival game, specifically for inserting a magazine into a gun, i thought it also sounded like a switch when sped up, so here it is.