The Black Knight

The Black Knight is an unused weapon in Fallout 76.

Background
The weapon has been in development limbo, dating back to the launch period of the game. For all intents and purposes, it is a standard hunting rifle with a skin. The "ATX" reference in the editor ID indicates that this may have been intended to appear in the Atomic Shop.

However, Bethesda abandoned the concept of creating separate weapon variants in order to apply a skin. Instead, the practice of swapping the appearance of an existing weapon has been in use almost universally since launch, making it unlikely that the Black Knight will reappear in its current form.

Locations
Development of this item never moved beyond the model and textures for the item.

Behind the scenes
In the game files, the weapon is labeled ATX_Sten. Another Sten gun previously appeared in Fallout Tactics.