Ingram MAC-10

The MAC-10 is a weapon in Check It Containment Facility.

Overview
As a weapon, it is used primarily as a defensive weapon, as the only teams given it (Biohazard Cleanup Crew and Medical Department) are not combative teams, though BCC is technically semi-combative. It replaced the TEC-9 for both teams, which was previously either the secondary (BCC) or only weapon (MD) for both teams.

It has the highest weapon capacity in the game, tied with the P90, with 50 rounds of ammunition.

While one could easily mistake it for an Uzi (to those without basic knowledge of guns), it is not an Uzi.