You can bring a dab rig on a plane, but the rules for "how" you pack it are very specific. If the rig is made of glass (a traditional water pipe), it is permitted in both carry-on and checked luggage, provided it is completely clean and free of any residue; any trace of illegal substances could lead to confiscation or legal issues with local authorities or the TSA. If it is an electronic dab rig (an e-rig like a Puffco), it MUST be in your carry-on bag because it contains a lithium-ion battery. Lithium batteries are strictly prohibited in checked luggage due to fire risks. You must also ensure the device cannot be accidentally activated during the flight. Furthermore, any "torch" or butane lighter used for a traditional rig is strictly prohibited in carry-on bags, and most are also banned from checked bags unless they have been purged of fuel or are in a specific DOT-approved case. While the hardware itself is usually fine as "tobacco accessories," the associated concentrates or oils are subject to federal and local laws, which may differ from the rules regarding the rig itself.