Per 
Item #: SCP-5965
Object Class:Euclid
Special Containment Procedures:SCP-5965 is to be contained in a 3x3x3 Containment cell,and a 10.5 centimeter rectangular glass box in the middle of the room,at site-101.
Description:SCP-5965 also known as "Sentient Sentry" is a being that highly resembles or is a sentry gun/turret.SCP-5965 is extremely hostile to any humanoid being.
SCP-5965 cannot move but it can depict which is a humanoid entity or not,and is also known to attack SCP's such as SCP-106,SCP-1440,SCP-303 etc.,SCP-5965 will attack anything
or anyone with a humanoid body shape.SCP-5965 also is known to have a brain and other vital organs and bullets are its teeth,SCP-5965 has a very complicated anatimy.SCP-5965
has a red or green light on top of SCP-5965 main body told to be its eye,if SCP-5965 "eye" is red it means that SCP-5965 will attack but if the light is green that means it
will not be hostile.And that wraps up the description of SCP-5965.
Addendum: [REDACTED]
