San Tan TacticalA(R), Hornady MfgA(R) and Proof ResearchA(R) have partnered up on the San Tan new 6ARC rifles. San Tan's innovative high quality firearm systems and unparalleled performance in combination with Hornady's New 6ARC round originally developed for a specialized group within the US DoD, and Proof Research premium carbon fiber barrels take the AR15 platform to a whole new level! The San Tan Tactical STT-15-6ARC rifles are a superb example of industry leading technologies from companies pushing the envelope with a desire to achieve more! With the other wildcat caliber's coming to market over the recent years, the recent 6.8 military requirement, all in an attempt to pursue the maximum output from the AR15 platform.The Hornady 6 ARC cartridge combined with their variety of projectiles currently available allows a significantly increase in capability above and beyond what is currently available in the AR15 platform. The capability to weight savings is see...