Mach Industries' Viper vertical takeoff cruise missiles in production at the company's Forge Huntington plant in California. Photo: Mach Industries

Mach Industries on Tuesday said it raised $300 million in a Series C round that will be put toward expanding its Forge factory network, small jet engine production efforts, advancing the second generation of its systems and hiring. The investment round was led by new investors Infinite Capital and Ribbit Capital, bringing total investment in the company to $500 million to date and values the California-based startup at $1.8 billion, giving it unicorn status. Mach has 350 employees. Forge is…