>>64395868
https://english.enabbaladi.net/archives/2021/03/home-grown-weapons-of-syrian-opposition-factions/

https://greydynamics.com/hell-cannon-confessions-of-a-syrian-amateur-weapons-engineer/

http://brown-moses.blogspot.com/2013/11/evidence-of-very-large-diy-barrel-bombs.html

https://battletech.com/forums/index.php?topic=48190.1350

https://www.youtube.com/watch?v=ov-51GGIV64

https://www.bellingcat.com/news/mena/2015/08/21/hell-cannons-from-minor-nuisance-to-major-threat-the-evolution-of-syrian-opposition-siege-artillery/

https://www.tiktok.com/%40prestonstew/video/7149588377501830443