A 27-year-old man shot himself in the chest in a restricted area of a buzzing Midtown subway station late Sunday — then told cops someone else pulled the trigger, authorities said.

Brooklyn resident Gary Grinshtein was arrested after he turned the gun on himself around 10:15 p.m. Sunday in a walkway leading from the tunnel to the F train platform at West 57th Street and Sixth Avenue, according to cops and sources.

The wounded Grinshtein managed to flee the station and told responding cops, “I was shot,” the sources said. A gun was recovered at the scene, police said. 

He was rushed in an NYPD vehicle to Mount Sinai West, where he was initially listed in critical condition but upgraded to stable by early Monday, police said.

While hospitalized, Grinshtein’s story started to unravel and he admitted the gunshot wound was self-inflicted, cops and sources said. 

He claimed he’d had an argument with his family member before the incident, according to the sources.

He was charged with criminal possession of a weapon, reckless endangerment, criminal trespass and making a false report, police said. 

The station is located in an area along 57th Street dubbed “Billionaire’s Row” for its exclusive, ultra-luxury residential skyscrapers — including the 1,550-foot-tall Central Park Tower, the world’s tallest residential building.

It’s also just seven blocks from Rockefeller Center, where thousands of tourists flock every day during the holiday season to see the Christmas tree.

If you are struggling with suicidal thoughts or are experiencing a mental health crisis and live in New York City, you can call 1-888-NYC-WELL for free and confidential crisis counseling.

If you live outside the five boroughs, you can dial the 24/7 National Suicide Prevention hotline at 988 or go to SuicidePreventionLifeline.org.