I dunno, I had (and assigned it to a son) a propane (LPG) powered .25 caliber handgun that packed quite a punch. It would put a goodly dent in a stainless steel magnetic parts bowl and plunk the 1/4" BBs within 6 inches of a rock in the ditch at about 20 yards.
I imagine hitting someone in a vulnerable spot could cause a person to bleed out after a while.
And NY, like many dense municipalites, defines anything that propels anything else as a deadly weapon including slingshots. I'm surprised they don't classify baseball pitchers as weapons.
I agree about tik tok. I won't go near it or click anything related to it.
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Refillable LPG tank and 10 1/4" BBs in the magazine: