Winchester-Williams .50 BMG Antitank Rifle
Spoiler
This AT rifle was developed by David Marshall Williams and hired by Winchester. It shoots .50 BMG and is self-loading. Although it was not tested by the US military, the Canadian Military tested it, and it passed its tests with flying colors. However, it was never purchased or put into production.
As the American faction currently has no self-loading AT rifle, this would be a fine addition to their faction’s low BR. Since Enlisted has already added weapons like the AS-44, Tokyo Arsenal SMG, etc., this gun meets all the requirements and standards for Enlisted. If this rifle and the Solothurn rifle get added, each nation will finally have a self-loading AT rifle.