'Extras' star Ricky Gervais has revealed that he nearly blinded Hollywood actor Rob Lowe while playing with a toy gun on the set of their new movie.

Gervais revealed in a blog that he was "having a laugh" on the set of 'This Side of the Truth', which he is directing, when the accident happened.

Gervais said: "One fires six darts at once and one has a rocket launcher. It soon got out of hand and in one particular stand-off I shot 'West Wing' star and Hollywood hunk Lowe in the eye."

"He was fine, but it would have been embarrassing to have had to tell Warner [the studio] that the film is delayed because the director blinded one of the stars while 'having a laugh'."

"At least my eye wasn't blood-shot like that loser Lowe," he wrote.