This doesn't really showcase how Arms flow for a variety of reasons including the reality that a huge portion of small arms are sold outside of official channel

This doesn't really showcase how Arms flow for a variety of reasons including the reality that a huge portion of small arms are sold outside of official channels without being disclosed or tracked. Do you think this sale got into the data set? https://www.npr.org/2019/02/21/696561255/heckler-koch-fined-4-2-million-over-assault-rifle-sales-in-mexico https://www.npr.org/2019/02/21/696561255/heckler-koch-fined-...