Adams is a former NYPD officer, and many retired cops opt to carry a weapon.
The Democrat hasn't been out much this fall and he's basically ignored his Republican opponent, but on Tuesday, he visited a small organic farm in Brooklyn.
He also made some news by saying Schools Chancellor Meisha Porter could possibly stay on if he wins.
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He said resurrecting the Bloomberg sugary soda tax is something he'd consider, and he told Sliwa to stop complaining and start being a serious candidate.
"If he wants to participate in a circus, that's fine," he said. "I'm just not buying the tickets. I'm focused on this city."
Sliwa, meanwhile, was in Washington Heights, where he blasted Adams for carrying a gun.
"Really, you're gonna carry a gun as mayor?" he said. "Are you out of your mind?"
Sliwa also introduced a group called Democrats for Sliwa, whose help he will need as Democrats outnumber Republicans in the city seven to one.
"Don't diminish me," he said. "Don't say I have no chance. I've been David vs. Goliath from day one in my entire life."
Adams did not seem to feel threatened.
"Well you know the three Democrats who are for Curtis Sliwa should know there are hundreds of thousands of Democrats are for Eric Adams," he said.
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He also slammed Sliwa as kind of silly.
"He enjoys the antics, the yelling and screaming and talking about all these different things, you know, 'Oh Eric is carrying a gun,'" he said. "No Curtis, you should be focused on who are carrying guns illegally."
Adams said Sliwa's best chance is to simply focus on the two debates as Election Day -- November 2 -- quickly approaches.
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