US News

Gibson allegedly threatened to use gun against ex-girlfriend

Mel Gibson allegedly threatened to use his own “Lethal Weapon” against his baby mama in a fit of rage, an explosive report revealed yesterday, as a fourth tape of his rantings was released.

The crazed actor allegedly pulled a gun on ex-girlfriend Oksana Grigorieva during a violent confrontation earlier this year, according to the report.

The allegation could be the final nail in the coffin for the “Lethal Weapon” star, who is already being investigated by LA cops for an alleged physically and verbally abusive blowup at Grigorieva on Jan. 6.

HEAR MEL’S LATEST RANT

RANT NUMBER ONE

RANT NUMBER TWO

RANT NUMBER THREE

Grigorieva told investigators that Gibson, 54, waved a gun in her face after she was beaten by him and tried to get away.

“Mel re-emerged holding the gun and began waving it in front of Oksana’s face, she has told investigators,” a source told Radar Online.

“Oksana said she was panicked and, while searching for the keys, Mel came up to her and said, ‘I will show you how to get out of here fast,’ which she interpreted to be a death threat.”

A rep for Gibson declined to comment.

Before the gun accusation, Gibson’s biggest worry was a series of embarrassing recorded phone calls in which he allegedly called Grigorieva, the mother of his young daughter, a “f–king bitch” and “whore” and said he’d bash her in the head with a bat.

In the latest recording made public yesterday, Gibson is allegedly raging over Oksana going to sleep before he got home, while she is insisting she tried to wait up for him.

“Waited and waited, what 2½ f–king minutes? You’re

f–king snoring!” Gibson screams at the pretty, 40-year-old Russian. “You’re blaming me right now — now I’m blaming you! You went to sleep and didn’t b— me!”

The “Mad Max” actor demands: “I deserve to be b—n first before the f–king Jacuzzi.

“I’ll burn the goddamned house down but b–w me first! How dare you, how f–king dare you!”

He then adds, “You wanted the number of my therapist? Don’t you ever speak to him! Find your own goddamned therapist! ‘Cause you got problems more than me, and you had to f–king push my buttons and it’s not going to work with us. It’s not! . . . I can’t get like this anymore!”

Grigorieva is set to ask a judge today to strip Gibson of any rights to custody of their 8-month-old daughter, TMZ.com said.

Gibson ended his 29-year marriage to be with Grigorieva, who has a 12-year-old son with her former boyfriend, “James Bond” actor Timothy Dalton.

“Take care of your f–king son, and I better have my daughter,” said Gibson, apparently miffed that Grigorieva never made the couple’s bed in the morning when they briefly lived together:

“I just want my daughter and a maid. It’s a lot less f–king trouble.”

The recordings alone could be enough to get Gibson fitted for handcuffs and a prison outfit.

“Those tapes are incredibly damaging . . . for domestic violence, assault and making terrorist threats,” said LA defense lawyer Steve Cron. “If the tapes are substantiated and if she cooperates with the sheriff, he’s in big trouble.”

david.li@nypost.com