Thompsons look subtly cursed with a picatinny slapped onto them.
Also cursed that Bonnie's using gear made over 40 years after her death (the aforementioned rail system, the desert eagle).
I will forgive this (along with the subtle oopsy of the make of revolver she's using) if she summons a bunch of BARs, m1911s, m1928 Tommys and model 11 whippets from behind her for infinite gun works lol