Geissele Super Duty platform in Olive Drab Green (ODG), chambered in 6mm ARC Configured with Magpul stock, CMMG bolt, and Radian safety. Key Features Platform: Geissele Automatics Super Duty (forged 7075-T6 receivers, Type III hardcoat anodize in ODG) Caliber: 6mm ARC Stock: Magpul (adjustable) Bolt: CMMG BCG (compatible with 6mm ARC / 6.5 Grendel / .22 ARC) Safety: Radian (ambi or configurable selector) Finish: Olive Drab Green (ODG) anodize throughout the Super Duty receivers/rail system Premium Geissele Super Duty build chambered for the excellent 6mm ARC cartridge. The Super Duty platform delivers Geissele's renowned reliability, tight tolerances, and duty-grade components in a distinctive ODG finish. This example has been upgraded with a Magpul stock for improved ergonomics and adjustability, a CMMG bolt carrier group optimized for the larger case head of 6mm ARC, and a Radian safety fo