 SCP-127, upon first glance, appears to be a standard MP5K submachine gun. Tests have revealed that aside from the outer steel shell, the entirety of the firearm is organic and alive. The weapon's ammunition initially appeared to be human-like teeth. However, DNA testing of the bullets resulted in no match to any known species on Earth. SCP-127 features two settings, semi-automatic and fully automatic. An audible groan can be heard when switching between the two. Upon depleting the weapon's magazine, typically 60 shots, it takes between three to five days to regrow a new supply of ammunition.