Per 
Item #: SCP-4186
Object Class: Safe
Special Containment Procedures: SCP-4186 is to be kept in Dr Blackbeard's office in a gun case. His expertise in all forms of guns gives him authorization to conduct tests on the object.
SCP-4186 is located at Site-76 in Dr. Blackbeard's Office
SCP-4186 is not to leave Dr Blackbeard's office by any means, unless O4 or higher request to see the object.
Description: SCP-4186 is a Gun Chassis with the unique ability to attach any and all attachments and modules from any known gun in the world, from shotguns to automatic assault rifles. For example, a shotgun chamber and barrel can be attached to the gun chassis, that is able to fire 50 Cal. Shotgun Slugs. The gun can be created to anyone's desire, with any caliber imaginable, and any shape. Any attachment or module attached to the gun chassis will automatically form to the shape of the chassis.
It is unclear who or what created SCP-4186, or it's know origins. The gun chassis was located in a pawn shop as an ordinary rifle, which was purchased by Dr Blackbeard. The gun also came with a strange envelope that was completely blank, except for a name in the center of the envelope that read "Universal Gun Chassis". The letter went in great detail about how the gun chassis works and all that you can do with it. The letter did not not contain any identification, just name and description.
Dr Blackbeard brought the gun chassis to the attention of the Foundation and has been given full authorization for research and tests on SCP-4186.
