Per 
SCP-7663 prior to containment.
Item #: SCP-7663
Object Class: Safe
Special Containment Procedures: SCP-7663 is contained inside a locker unit in Site-85. Although SCP-7663 does not present any threat on it's own, it could cause a major disaster in the wrong hands. Armed guards must protect the locker unit in shifts. SCP-7663 is only to be removed from it's containment unit with permission from Level 4 Clearance or above.
Description: SCP-7663 is a plastic dart gun, manifactured by the company known as NERF. There is another label reading "Stryfe" on the upper side. SCP-7663 has no stickers, stamps, or anything of the sort. Strangely, the dart gun does not resemble any series of toys NERF has released yet. When the existence of the toy gun was brought up to the head designers of NERF, they claimed that they don't recall anything about designing it.
SCP-7663 has a plastic outer shell, and is shaped like an ordinary toy rifle gun, covered in blue and orange spray paint. However; when the triggered is pulled, the dart placed exits the barrel at approximately 8% of lightspeed. The dart does not recieve any form of damage from the resistance of the air surrounding it.
At such a high velocity, when SCP-7663's projectile hits a target, it implies an unbelievable amount of force. Measured to be around 3 quadrillion Joules. The dart does not generate any heat due to friction when hitting a target. However, the shockwave emitted from the blast seems to be very severe. Violent enough to rupture the eardrums of any humans inside a 50m radius without proper equipment.
Addendum: Test performed on a D-Class subject proved that the dart fired carries enough force to penetrate through [DATA EXPUNGED]. O5 requested the object to be locked and secured immediately due to the risk of a ██████ scenario.
