The Firearm Blog: San Tan Tactical STT-15-6ARC Rifles Made in Collaboration with Hornady and Proof Research

With the new 6ARC round originally being made specifically for a specialized group within the United States Department of Defense you can bet a lot of people are going to want to get their hands on this new caliber. The STT-15-6ARC rifle combines several industry-leading technologies to bring the new caliber to your hands.

https://www.thefirearmblog.com/blog/2020/06/04/stt-15-6arc/