Rock River Arms MR556 A4 5.56 NATO 16.5" CA Compliant

Rock River Arms MR556 A4: California-Compliant Modern Sporting Rifle

The Rock River Arms MR556 A4 represents a thoughtful approach to the modern sporting rifle for shooters in states with restrictive firearms regulations. This rifle maintains the core functionality and accuracy of the A4 platform while incorporating the design features necessary for California compliance.

Key Features

• Caliber: 5.56 NATO (.223 Remington compatible)
• Barrel: 16.5" chrome-moly steel with 1:9" twist rate
• Magazine Capacity: 10 rounds (California-compliant)
• Finish: Black anodized aluminum receiver with black furniture
• Platform: A4-pattern design with flat-top receiver and Picatinny rail

Design and Functionality

The MR556 A4 delivers the accuracy and reliability expected from Rock River Arms. The A4 configuration provides a modern platform suitable for target shooting, sport competition, and general marksmanship practice. The 16.5" barrel offers a practical balance between velocity and handling characteristics.

California Compliance

This rifle is specifically configured to meet California's firearm regulations, making it a legal option for residents of that state. The fixed magazine design and capacity limitations ensure compliance with current state law.

Ideal For

Shooters in California and other restrictive jurisdictions seeking a reliable, accurate modern sporting rifle. Suitable for target shooting, marksmanship development, and recreational use.