Hollywood actress Jessica Chastain insisted on Tuesday that it takes months to obtain an X-ray in America, compared to minutes to purchase an AR-15.

Chastain is known for her roles in Zero Dark Thirty, Interstellar, and The Martian. In a tweet on Tuesday, she included the handle for her less popular pro-gun control movie Miss Sloane, which in December 2016 had one of the worst opening weekends of all-time.

Welcome to America, where you'll wait 6 months for an X-ray but hey, you can buy an AR-15 in 5 minutes flat. – @MissSloaneMovie — Jessica Chastain (@jes_chastain) October 4, 2017

Chastain was mocked by others, who noted that she clearly did not know how long it took to obtain an X-ray or a gun.

I learned to walk again and got two robot legs custom fitted quicker than the @ATFHQ approved my first silencer 🇺🇸 https://t.co/qjYgLFrPff — Johnny (Joey) Jones (@Johnny_Joey) October 4, 2017

Where in America do you have to wait that long for an x-ray? This isn’t the UK. https://t.co/N8Ubj6XkkV — Ashe Schow (@AsheSchow) October 4, 2017

I got an x-ray for a sports injury just last week at my local urgent care. Took minutes. Waited way longer for my AR. https://t.co/6ER6fLNUPL — Dana Loesch (@DLoesch) October 4, 2017

Sent a patient off for an x-ray this morning. Got the wet read before lunch. https://t.co/jQaWrcIgAA — Arie Friedman, MD (@ArieFriedman) October 4, 2017