(Edit: Pretty visible changes...)
"Zootopia, while a prosperous city, is also an extremely chaotic and violent one, especially at night. Criminals constantly fight to make large amounts of capital through illegal means, while extremists constantly attempt to bring down the city government and establish a new one that's more supportive of their radical agendas. We need to be ready, on alert 24/7. The words of a single mammal can be dangerous, and simple sprays and tranq darts won't be enough to silence them. We need some real firepower, fellow upholders of the law. The last thing we need is another Dawn Bellweather turning the entire city upside down." Jonas Longshot, ZPD weapons specialist
For added realism, and safety, they should be wearing eye protection, too. H&K made the UMP45 for the US market, with 9mm and .40S&W just to cover all the bases. Good guns, but not too many departments were in the SMG market then.