Given that it seems that every Federal agency has an Office of Inspector General with armed law enforcement officers and a SWAT team, I guess this solicitation by the USDA OIG isn't too surprising.
Beyond the question of why they even need them which is highly debatable, the solicitation has got me to wondering about semi-automatic submachine guns. Aren't they an oxymoron? Perhaps the contracting office didn't want to use the term "assault rifle" or "assault weapon" and just decided that "submachine gun" was a kinder, gentler way of saying they wanted a bad-ass looking firearm to put the fear of God and the USDA into those damn farmers. Given the vagaries of Federal acquisitions, who knows for sure.::