Ruger AR-556 MPR 5.56 NATO 18" Threaded Barrel American Flag

The Ruger AR-556 MPR delivers precision-oriented performance in a versatile semi-automatic platform designed for multiple shooting disciplines. This multi-purpose rifle combines an 18-inch cold hammer-forged barrel with premium components to achieve sub-MOA accuracy potential while maintaining the reliability AR-15 users demand.

What Makes This Different

The MPR (Multi-Purpose Rifle) configuration sets this AR-556 apart from standard carbine-length rifles through its precision-focused barrel profile and enhanced component selection. The 18-inch barrel length provides increased velocity and improved ballistic performance compared to 16-inch alternatives, while the 1:8 twist rate stabilizes both 55-grain and heavier match bullets effectively. The threaded muzzle accepts standard 1/2x28 devices including compensators, flash hiders, and suppressors.

Key Features

• 18-inch cold hammer-forged barrel with black nitride finish for corrosion resistance
• 1/2x28 threaded muzzle with Ruger Hybrid muzzle brake included
• American Flag Cerakote finish on upper and lower receivers
• Magpul SL buttstock with multiple length-of-pull positions
• Magpul MOE grip for improved ergonomics and control
• 15-inch free-float handguard with M-LOK attachment points
• Ruger Elite 452 AR-Trigger with crisp break and short reset

Field testing demonstrates consistent accuracy with match-grade ammunition, typically achieving 1-2 MOA groups at 100 yards. The longer sight radius and barrel length make this configuration well-suited for precision shooting applications, competitive events, and hunting scenarios where accuracy takes priority over maneuverability. The nitride barrel treatment provides extended service life even under high round counts.

Technical Specs

• Caliber: 5.56x45mm NATO/.223 Remington
• Barrel Length: 18 inches, 1:8 twist rate
• Overall Length: 36.75-40.25 inches (depending on stock position)
• Weight: Approximately 6.8 pounds
• Magazine Capacity: 30 rounds (one included)
• Safety: Cross-bolt type in trigger guard
• Finish: Black nitride barrel, American Flag Cerakote receivers
• Country of Origin: USA

This MPR configuration addresses the growing demand for accurate, versatile AR-15 platforms that excel beyond typical carbine applications. The premium component package and precision-oriented barrel make it a practical choice for shooters who require both reliability and accuracy in a single platform.