Midwest Industries MI308URR Upper Receiver Rod 308 Cal AR-Platform

The Midwest Industries MI308URR Upper Receiver Rod delivers precision alignment and enhanced durability for AR-308 and LR-308 platform builds. This critical component ensures proper upper receiver spacing and maintains structural integrity during high-pressure .308 Winchester firing cycles. Machined from premium 4140 steel with a corrosion-resistant black finish, this receiver rod meets the demanding requirements of tactical and precision rifle applications.

What Makes This Different

Unlike standard receiver components that may flex under heavy recoil, the MI308URR features heat-treated 4140 steel construction that maintains dimensional stability across thousands of rounds. The precision-machined tolerances ensure consistent lockup between upper and lower receivers, eliminating play that can affect accuracy. This receiver rod specifically addresses the unique stress patterns of .308 caliber platforms, where standard AR-15 components often fall short.

Key Features

• 4140 steel construction with superior tensile strength for .308 Winchester pressures
• Black oxide finish provides corrosion resistance and reduced glare
• Precision-machined to MILSPEC tolerances for consistent fit
• Compatible with AR-308, LR-308, and DPMS pattern receivers
• Heat-treated for enhanced wear resistance and longevity
• Single-piece construction eliminates potential failure points
• Manufactured in the USA with quality control standards

Field testing demonstrates reliable performance across temperature extremes and extended firing sessions. The hardened steel construction resists deformation under the increased bolt thrust of .308 Winchester cartridges, maintaining headspace consistency that directly impacts accuracy. Law enforcement agencies and competitive shooters rely on this component for builds requiring maximum reliability and precision.

Technical Specs

• Material: 4140 steel, heat-treated
• Finish: Black oxide coating
• Compatibility: AR-308, LR-308, DPMS pattern rifles
• Caliber: .308 Winchester/7.62x51mm NATO
• Quantity: 1 piece
• Manufacturing: CNC machined to MILSPEC standards
• Country of Origin: United States

This receiver rod represents essential infrastructure for serious .308 platform builds where component failure is not an option. The engineering focus on material selection and manufacturing precision ensures consistent performance across diverse operating conditions. Midwest Industries' reputation for quality control makes this component a reliable foundation for tactical and precision rifle applications.