Bobb’e J. Thompson — known for playing the foul-mouthed, trouble-making kid in “Role Models” — is in some real-life trouble … for allegedly having a stolen gun.

Law enforcement sources tell TMZ … the actor was going through security at LAX when a Glock firearm was found in his baggage. We’re told the gun was loaded too, but did not have a round in the chamber.

Our sources say during the airport police investigation, cops learned the gun was stolen … and Bobb’e was arrested and taken to the station.

According to police … Thompson — also known for roles on “That’s So Raven,” “30 Rock” and ‘House of Payne’ — was booked for felony possession of a stolen firearm.

He was released after posting a $35,000 bond.

We don’t imagine he called any of the officers Ben Affleck. Funny as hell in the movie, but not so much when you’re getting arrested.