The H&K MP5k is an automatic sub-machine gun encountered at rare times throughout Afraid of Monsters: Director's Cut. It uses a 30 round magazine and fires at a fast rate. Damage is moderate and head shots work more efficiently. The weapon may be nearly vital to use in more difficult situations, however, ammunition is often scarce. It is recommended to fire this weapon in short bursts for better control, accuracy, and ammo conservation.

The H&K MP5K is placed in weapon slot 3, but the player must swap and drop any existing weapon that shares the same weapon slot like the Shotgun in order to pick it up.