'Sons of Anarchy' Actor -- Motorcycle Booth Raided By Cops

One of the SAMCRO bikers on "Sons of Anarchy" had a close encounter with cops and a rival gang Friday in Nevada ... when police feared the actor might pull a Jax and start beating ass.

Rusty Coones -- a known Hells Angel member -- was running his clothing company booth at the famous Laughlin River Run biker rally ... when a ton of officers descended and shut him down.

Cops also closed the booths on either side -- run by a member of rival gang Vagos Motorcycle Club -- police feared violence between the 2 groups.

Vago member's lawyer Stephen Stubbs says the irony is ... both sides were getting along just fine ... and the shut down only caused the two companies to lose money.