Sons of Anarchy star Tommy Flanagan represents SAMCRO in surprise Mayans M.C. cameo 

Tommy Flanagan (Chibs), Jacob Vargas (Montez), David Labrava (Happy) and Rusty Coones (Quinn) appear in a promo for Mayans MC 2x08.
Keywords: sons of anarchy, mayans mc, crossover, promo, teaser, article, tvline, october 2019, chibs, montez, happy, quinn