Introducing the Diamondback Firearms 338 ARC. This new Diamondback DB15 Pistol is chambered in .338 ARC and purpose-built for shooters who won’t settle for second best. With ballistic performance that punches far beyond traditional AR calibers, this pistol delivers accuracy, energy, and versatility in a compact platform. Also, unlike other options on the market, you’re not locked into proprietary magazines. The Diamondback .338 ARC runs seamlessly on .400 Legend, 6.5 Grendel, and 7.62x39 AR15 ma