Over the weekend on social media SIG Sauer announced their final delivery of prototype weapon systems to the U.S. Army for evaluation. The delivery includes the final prototypes of the SIG’s rifle and machine gun. The weapon systems have been refined after feedback from the “solider touch point” phase of field evaluation. Which they sent the weapon prototypes and their proprietary 6.8x51mm ammunition. SIG Sauer was the only company to completely build and design the weapon systems, suppressors, and ammunition in house with no external partners.