Is this an NFA weapon? More than one fired with a single trigger pull?
did this passed NFA muster? - fires two 22 Win Mag with each trigger pull
https://www.thefirearmblog.com/blog/2021/02/16/standard-manufacturing-s333-thunderstruck-gen-2/
No, they would have to be fired from a single barrel. The same stipulation prevents the gatling gun from being classified as an NFA weapon.