Prosecutors have hit Duane Brown with a criminal charge stemming from his arrest at LAX last weekend ... and now, the NFL star could be facing up to 1 year behind bars if he's convicted.
We broke the story, the five-time Pro Bowler -- who most recently played for the Seattle Seahawks -- was busted at the airport in L.A. on July 9 after authorities said he tried to go through TSA with a gun in his luggage.
Now, TMZ Sports has learned Brown has been charged by Los Angeles City Attorney Mike Feuer, a longtime national leader on gun violence prevention.