The Mortal Kombat reboot movie explains in gruesome detail how Jax lost his arms, but that's just one version of the story.
Jackson Briggs - Jax, Mortal Kombat Wiki
Why I'm Concerned About The New Mortal Kombat Movie, by Jade M., The Gaming Geeks
Who Won The Mortal Kombat Trailer?
Mortal Kombat: Defenders of the Realm (TV Series 1995–1996) - IMDb
Bionic Arms, Mortal Kombat Wiki
Black characters with metal arms - Truly a Phenomenon - Super. Black.
Mortal Kombat: The Many Ways Jax Got His Metal Arms
Avery Dennison MPI 1105 SuperCast Easy Apply RS Metro
Jax And His Metal Arms Return For Mortal Kombat - Game Informer
Mortal Kombat Screenwriter Teases 'Big Plans' For Jax