Might be a kind of gun powder that doesn't leave smoke.
Electric / magnetic propelled.
Prime Minister Netanyahu’s Remarks at the “Fifty States – One Israel” Event
https://www.youtube.com/watch?v=VDJXgdNu2QA
DC Mayor Bowser from Super Mario says DC Police will no longer assist National Guard
https://x.com/MayorBowser/status/1965803216051827199
Patel reveals details about Kirk investigation, including suspect's message about 'hatred'
https://www.youtube.com/watch?v=LWC1_cZUQRY
The Kiffness (Cat Music Guy): Thoughts on the death of Charlie Kirk
https://www.youtube.com/watch?v=oHXvMiMPXDM