As the producer dishes on Anne Hathaway's Judy Garland biopic, he gives details on his NRA project with Meryl Streep.

Amid a full-steam awards campaign for "August: Osage County," Hollywood super producer Harvey Weinstein dropped a bombshell or two on Howard Stern's Sirius XM radio show Wednesday (January 15.)

While we already knew that Weinstein had tapped Anne Hathaway to play Judy Garland in the upcoming biopic, "Get Happy," the mogul (though he's reluctant to accept the title) revealed that production will likely begin this summer.

"There's no testing," Weinstein said of casting Hathaway for the role. "She sung like Judy Garland for me, she sings beautifully, she has that look ... I think that'll be a good movie."

But the real jaw-dropper came near the end of Weinstein's hour-long interview, in which he revealed that he and Meryl Streep are collaborating on what sounds a lot like an NRA takedown project.

Weinstein found himself on a tangent about why he hates guns, admitting that, "I don't think we need guns in this country and I hate it, and I think that the NRA is a disaster area." Then, after acknowledging that he "shouldn't say this," Weinstein revealed details about his next collaboration with his "August: Osage County" star.

"I'm gonna make a movie with Meryl Streep and we're gonna take this issue head on," he said. "They're gonna wish they weren't alive after I'm done with them."

Likening the project to the 1939 film "Mr. Smith Goes to Washington," Weinstein predicts that gun stocks will "crash and burn" after the film's release.

Among the other topics discussed (including, at great length, Stern's affections for Weinstein's wife, Marchesa co-founder Georgina Chapman), the 61-year-old father of five expanded on his plans to direct an adaptation of the Warsaw uprising story "Mila 18."

"It took me 20 years to track this down and get it," he said of the film rights to Leon Uris' classic book. "I've gotta do this one. This has bugged me my whole life. This has been a project I've searched for ever since my aunt gave me the book when I was a boy. It's an important story to tell."