OH 18-Inch 6mm ARC Complete Upper Receiver

Enhance your AR-15 platform with the OH 18-Inch 6mm ARC Complete Upper Receiver. This upper is designed for shooters seeking precision, reliability, and extended range performance. It features an 18-inch 416R stainless steel barrel with a 1:7.5 twist rate, ensuring excellent stabilization for a variety of 6mm ARC projectile weights. This makes it ideal for both long-range shooting and hunting applications.

Key Features

• Caliber: 6mm ARC
• Barrel Profile: HBAR
• Muzzle Thread: 5/8x24
• Gas System: Rifle
• Material: 416R Stainless Steel
• Handguard Length: 18 inches

The free-float M-Lok handguard provides a lightweight and rigid platform, enhancing accuracy while allowing for easy mounting of lights, bipods, and other accessories. A nitride-finished bolt carrier group ensures smooth cycling and durability under demanding conditions. Built to Mil-Spec standards, this complete upper receiver comes ready to install on any Mil-Spec AR-15 lower receiver, including a charging handle and bolt carrier group. Whether you are building a precision rifle, a hunting setup, or a versatile AR platform, this 6mm ARC upper offers the performance needed to extend your rifle’s capabilities.

Available from ICB Firearms, offering fast nationwide shipping and local pickup in Saint Clair Shores, Michigan.