.45 revolver

The .45 revolver is a weapon that was to appear in Van Buren, the canceled Fallout 3 by Black Isle Studios. It also featured in the Van Buren tech demo game files.

Van Buren tech demo
While it doesn't appear in the Van Buren tech demo, it is still present in the game files and can be spawned with the console command.

Van Buren

 * Carried by Sheriff Mike O'Connor in Jericho/New Canaan.