A4 Fitness is now the most complete Fitness / CrossFit and Martial Arts gym in Los Angeles after our purchase of AMMS. I hope all our friends and clients will be happy to know, we have completed the adaptation of "Academy of Mixed Martial Science" into A4 Fitness. AMMS was one of the most successful MMA gyms in Los Angeles. After our purchase of AMMS we believe that A4 Fitness is the most complete boutique martial arts Los Angeles gym on the westside.