From head and arm control you can catch the katagatame or arm triangle choke. You have the option to finish from mount or side
This is one of my favorite submissions filmed at Precision MMA a Dutchess County BJJ school
Brian McLaughlin is a black belt in Brazilian Jiu-Jitsu and has been grappling for over 13 years. He's amassed an array of medals, including the Pan Ams, ADCC North American Trials, Grapplers Quest Pro Divisions, and NAGA World Championships, but now spends most of his time teaching at his gym, Precision Mixed Martial Arts and coaching MMA fighters.