Enrriflado is a slang term, particularly used in Mexican Spanish, that means "decked out," "well-equipped," or "armed to the teeth." It implies being prepared and having everything one needs, often in a flashy or powerful way.
In the context of this song, it refers to the narrator being heavily armed and ready for action, fitting the narcocorrido genre. It's an interesting word because it's not commonly found in standard Spanish dictionaries, making it unique to this type of regional slang.
Virlan Garcia's "Gente de las 4" throws us right into the fast lane with a character who's all about action and loyalty. He's moving "rápido, voy tendido" [fast, I'm stretched out] with a rifle by his side, and his crew is always ready when he gives the order. He makes it clear he's not afraid to use his weapon, saying, "Saben que me gusta tirar balas / Porque en caliente yo ataco" [They know I like to shoot bullets / Because I attack in a hurry]. He also hints at his identity with the line "Dicen que mi clave son dos letras" [They say my code is two letters], suggesting he's a known figure.
But it's not all serious business. This guy also enjoys the good life, cruising in sports cars and hanging out with friends. He even mentions being good at soccer and getting some cardio in! He's grateful for San Juditas [Saint Jude] watching over him and his family, remembering the poverty he experienced as a kid. He's a friend and a good person in Jalisco, but don't forget his "clave" [code] if you want to earn his respect. The song ends with him and his team, rifles in hand, ready to celebrate, declaring, "Somos gente de las 4" [We are people of the 4].