HK MR556 A1 75th Anniversary 5.56 NATO 16.5" Flecktarn Camo 4-Mag Kit

The HK MR556 A1 75th Anniversary edition combines Heckler & Koch's proven piston-driven system with distinctive Flecktarn camouflage finish to commemorate seven decades of German engineering excellence. This limited production rifle delivers the reliability of military HK416 technology in a civilian-legal configuration.

What Makes This Different

Unlike direct impingement AR-15 platforms, the MR556 A1 uses HK's proprietary short-stroke gas piston system that keeps fouling away from the bolt carrier group. The cold hammer-forged barrel provides consistent accuracy across thousands of rounds while the free-floating M-LOK handguard eliminates point-of-impact shifts from accessory mounting. The distinctive Flecktarn camouflage pattern on the upper receiver creates a unique aesthetic unavailable on standard production models.

Key Features

• Short-stroke gas piston system reduces maintenance requirements and heat buildup
• 16.5-inch cold hammer-forged barrel with 1:7 twist rate optimized for 5.56 NATO
• Free-floating M-LOK handguard with full-length Picatinny top rail
• Flecktarn camouflage finish on aluminum upper receiver
• Adjustable black synthetic stock with multiple length-of-pull positions
• Four 10-round magazines included for restricted states compliance
• Ambidextrous controls including bolt catch and magazine release

Field testing demonstrates consistent sub-2 MOA accuracy with quality ammunition, while the piston system maintains reliability through extended firing sessions without cleaning. The platform excels in competitive shooting environments where consistent point-of-impact matters, and the robust construction handles adverse weather conditions that challenge traditional direct impingement systems. Law enforcement agencies worldwide rely on the HK416 platform that forms the foundation of this civilian variant.

Technical Specs

• Caliber: 5.56x45mm NATO/.223 Remington
• Barrel Length: 16.5 inches with 1:7 twist rate
• Overall Length: Approximately 33-37 inches (stock dependent)
• Weight: 8.9 pounds unloaded
• Magazine Capacity: 10+1 rounds (four magazines included)
• Upper Receiver: Aluminum with Flecktarn camouflage finish
• Handguard: Free-floating M-LOK compatible
• Stock: Adjustable synthetic with multiple positions
• Country of Origin: Germany

This 75th Anniversary edition represents a limited production run that combines proven HK engineering with commemorative aesthetics. The included magazine package and distinctive finish make this variant particularly attractive to collectors and serious shooters seeking German precision manufacturing.