New 6 mm ARC (Advanced Rifle Cartridge) and STT-15-6ARC Rifles
San Tan Tactical, Hornady and Proof Research have partnered up on the San Tan new 6 mm ARC rifles. San Tan’s high-quality firearm systemsin combination with Hornady’s New 6 mm ARC round originally developed for a specialized group within the US DoD, and Proof Research premium carbon fiber barrels take the AR-15 platform to a whole new level!