DURAMAG 4-Round Ruger American Magazine, 6.5 Grendel / 6mm ARC / .22 ARC The DURAMAG four-round magazine is designed for compatible Ruger American rifles chambered in 6.5 Grendel, 6mm ARC or .22 ARC. Its flush-fit profile works with the original Ruger American stock and AR-pattern magazine well. That combination provides detachable-magazine convenience while keeping the magazine close to the underside of the rifle. Compatibility is specific to the rifle's magazine-well arrangement as well as its chambering. The magazine serves the three stated cartridge options in appropriately configured rifles, and the four-round capacity remains the same. For a Ruger American with the matching AR-pattern setup, the compact profile is the main practical distinction when selecting this magazine. Confirm both the cartridge and the magazine interface rather than relying on the rifle's family name alone. Key Features Four-round capacity: Provides the stated capacity for the supported cartridge group. Grendel and ARC compatibility: Supports 6.5 Grendel, 6mm ARC and .22 ARC in matching rifles. Flush-fit profile: Fits close to the underside of the original compatible Ruger American stock. AR-pattern interface: Requires the corresponding Ruger American magazine well. Specifications Brand: DURAMAG / C Products Defense Manufacturer part number: 4X650F41176CPD Product type: Detachable rifle magazine Capacity: 4 rounds Cartridges: 6.5 Grendel; 6mm ARC; .22 ARC Rifle application: Compatible Ruger American rifles with original stock and AR-pattern magazine well Shop the DURAMAG four-round Ruger American Grendel and ARC magazine at BattleHawk Armory.