SEE: Gun Vs. Bat Stand-Off Breaks Out On Brooklyn G Train

GREENPOINT, BROOKLYN — A now-viral video of an altercation on the G train has become a real-life version of the cliche "he brought a bat to a gun fight."

Popular social media accounts Barstool Sports and Subway Creatures both posted a video that shows former NYPD Detective David Morales pulling his gun on a bat-wielding man who was threatening him on the Brooklyn subway Wednesday morning.

Police said that the man, Brian Baska, had accused Morales of bumping into him when the former officer got onto the train at Greenpoint Avenue station just before 7 a.m.

Morales told Baska he was a police officer — he is retired and now works as an Administration for Children's Services investigator — as he took out his gun, trying to get Baska to stand down, police said. Other passengers quickly moved to the other side of the train as the two yelled in a stand-off, some taking out their phones to snap a video.

"You're threatening me, you're threatening my property!" Baska can be heard yelling in the video.

Morales told CBS that what the video didn't capture was Baska pulling back his bat to swing, which is when he took out his gun. The detective said he reverted back to his police training.

Baska eventually got off the train at the Clinton-Washington Avenue station, police said. He was arrested and charged with second-degree menacing and fourth-degree possession of a criminal weapon.

The NYPD's Transit Division thanked Morales for keeping other passengers safe on the train.

"His blood still blue, retired NYPD Detective Dave Morales showed calm and restraint when a man threatened subway passengers with a bat," the division tweeted. "Now an Administration for Children’s Services investigator, Dave’s concern and care for kids carried over to fellow subway riders yesterday."