Denzel Perryman is in the clear -- the District Attorney will NOT pursue charges against the Chargers linebacker -- just days after the NFL vet was busted for allegedly carrying two illegal assault rifles in L.A.
TMZ Sports has learned the L.A. County D.A. ultimately decided against charging the 32-year-old former second-round draft pick ... though it's unclear why.
We broke the story ... Perryman was stopped and ultimately arrested by police Friday evening in the Los Angeles area -- as he headed to a local gun range.