One Horse 18" 6mm ARC Rifle 1:7 M-LOK Complete Upper

One Horse 18" 6mm ARC Rifle 1:7 M-LOK Complete Upper The One Horse 18" 6mm ARC Rifle Complete Upper is built for shooters who want to extend the reach of the AR-15 platform without giving up reliability. Its 18-inch 416R stainless barrel and 1:7.5 twist are designed to deliver strong stabilization and accuracy across a range of 6mm ARC loads, making it a solid choice for precision shooting, hunting, and general-purpose long-range setups. The free-float M-LOK handguard provides a stable, accessory-ready platform, while the included nitride-finished bolt carrier group and charging handle make it a ready-to-install option for compatible Mil-Spec AR-15 lowers. Features 18-inch 6mm ARC barrel Free-float M-LOK handguard Nitride-finished bolt carrier group included Charging handle included Built for Mil-Spec AR-15 lower compatibility Made in the U.S.A. Specifications Caliber: 6mm ARC Barrel Profile: HBAR Muzzle Thread: 5/8x24 Twist Rate: 1:7.5 Gas System: Rifle Barrel Material: 416R stainless steel Handguard Length: 18 in. Country of Origin: U.S.A.