Grace Gummer on ‘Mr. Robot’ and being Meryl Streep’s daughter

Grace Gummer, 30, plays an FBI investigator on “Mr. Robot,” the cyberthriller that starts its second season at 10 p.m. Wednesday on USA Network.

NEW YORK — The weight of a gun in her hand was unsettling.

“It’s a very loaded feeling in every sense,” Grace Gummer said. “It makes you stand a little straighter, walk a little taller. It makes you feel important. But at the same time, it’s terrifying.”

She made a point, just the same, of getting cozy with the weapon she had been assigned for her role as the brash, intensely focused FBI investigator Dom DiPierro, a new character in “Mr. Robot,” the USA Network cyberthriller.

For the show, which begins its second season at 10 p.m. Wednesday, “I learned to shoot,” she said. “I figured I’m going to have to shoot it at some point. Still, it’s not a natural movement my body would make.”

Gummer, 30, set aside those qualms as she lounged one afternoon recently, talking fashion, family and career.

In “Mr. Robot,” she wears no-nonsense blazers, close-fitting knits and trousers accessorized with heavy-duty black belts.

The character tempers her aggressiveness with a daft charm.

“She is sort of like a Fran McDormand in ‘Fargo’: earnest, feminine, messy and private, but tough,” she said.

The actress herself has acquired a bit of toughness. She had little choice. She bears the gift, or daunting burden if you like, of being Meryl Streep’s daughter.

“It used to bother me,” she said. “I try not to think about it, or it could really get to me.”

There is also the weight of her striking resemblance to her older sister, Mamie Gummer, also an actress. “People think Mamie and I are the same person,” she said.

To forge a distinct identity, she takes on roles “that matter to me,” she said, like that of a comely but chilly reporter in the HBO series “The Newsroom” or as the young Nora Ephron in “Good Girls Revolt” on Amazon.

Gummer suggested that acting is something like journalism.

“You like the chase,” she said. “You like being the one to tell the story. It’s your interpretation of an event.”