There's a bill (H.R. 4009) named "Flamethrowers? Really? Act" to regulate flamethrowers the same way machine guns are regulated: https://www.congress.gov/bill/1

There's a bill (H.R. 4009) named "Flamethrowers? Really? Act" to regulate flamethrowers the same way machine guns are regulated: https://www.congress.gov/bill/114th-congress/house-bill/4009/text https://www.congress.gov/bill/114th-congress/house-bill/4009...