The knife featured in the climactic fight between Agent Scorby and Kurt S. Charlottan (which Scorby uses "the Force" to retrieve) is an authentic Hitlerjugend knife. The knife was a family heirloom handed down by director Michael A. Martinez's first cousin, twice removed Harald Schubert, who served in the Waffen SS and narrowly escaped Russian Encirclement to surrender to the Americans at the end of World War 2.
Matt Davis and Shannon Anderson both play the same character. The reason the role was split between them was that Shannon stopped showing up to filming on certain days and they looked vaguely similar (besides, most obviously, different eye color).