Derived from

AR15 Various Sounds by wadaltmon
https://www.freesound.org/people/wadaltmon/sounds/263513/
http://creativecommons.org/publicdomain/zero/1.0/

Steel chain hard clicking by ani_music
https://www.freesound.org/people/ani_music/sounds/167916/
http://creativecommons.org/publicdomain/zero/1.0/