HK MR556 A1 75th Anniversary 5.56 NATO Flecktarn Rifle

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Celebrate precision and heritage with the HK MR556 A1 75th Anniversary Rifle, chambered in 5.56x45mm and limited to just 500 units. Featuring a 16.5" cold hammer forged barrel and HK’s proprietary short-stroke gas piston system, this rifle offers unmatched reliability and cleaner operation under extreme conditions. The Flecktarn camo finish on the Picatinny rail and M-LOK handguard pays tribute to the Bundeswehr, while the rugged black synthetic adjustable stock ensures tactical versatility. Designed for civilian use but derived from the battle-proven HK416, this collector’s edition includes four 10-round magazines and is the ultimate fusion of performance, history, and exclusivity.

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SKU
642230268500

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Celebrate 75 years of precision engineering with the HK MR556 A1 75th Anniversary 5.56x45mm Rifle, a limited-edition tactical masterpiece. Only 500 units of this exclusive commemorative model will be released, making it a rare collectible for firearm enthusiasts and HK loyalists. Built on the combat-proven legacy of the HK416, the MR556A1 offers unmatched reliability, accuracy, and durability. Its Flecktarn camo finish, cold hammer-forged barrel, and short-stroke gas piston system deliver professional-grade performance in a civilian-legal semi-auto configuration.

Key Features

  • Limited Edition – Only 500 Made: Own a piece of HK history with this exclusive 75th Anniversary edition in Flecktarn camo.
  • Short-Stroke Gas Piston System: Cleaner and more reliable than traditional direct impingement systems, especially in harsh conditions.
  • 16.5" Cold Hammer Forged Barrel: Made from cannon-grade steel for long-lasting accuracy and durability.
  • Flecktarn Camo Receiver & M-LOK Handguard: Distinctive German military camo pattern enhances style and collectibility.
  • Fully Ambidextrous Controls: Designed for versatility and ease of use by both left- and right-handed shooters.
  • Four Included 10-Round Magazines: Ready for range or field with compliant capacity for restricted states.
  • Adjustable Stock & Picatinny Rail: Customizable for comfort and optics-ready for tactical use.
  • Made to Perform in Adverse Conditions: Sealed gas system and rugged components thrive in dust, sand, and mud.

Specifications

  • Brand: HK
  • Model: MR556 A1 75th Anniversary
  • Caliber: 5.56x45mm NATO
  • Action: Semi-Auto
  • Operating System: Short-Stroke Gas Piston
  • Barrel Length: 16.5" Cold Hammer Forged, Stainless Steel
  • Twist Rate: 1:7"
  • Capacity: 30+1 (Includes four 10-round magazines)
  • Sights: None (Optics Ready)
  • Receiver Material: Aluminum
  • Receiver Finish: Flecktarn Camo
  • Handguard: M-LOK, Flecktarn Camo
  • Grip: Black Polymer
  • Stock: Adjustable Synthetic
  • Stock Finish: Black
  • Overall Length: 33.90" – 37.68"
  • Height: 9.45"
  • Width: 3.07"
  • Weight: 8.60 lbs
  • Trigger Pull: 7.64 lbs
  • Grooves: 6

Conclusion

  • The HK MR556 A1 75th Anniversary Flecktarn Edition blends elite military-grade performance with historic significance. From its ultra-reliable piston system to its stunning Flecktarn camo finish, this rifle is designed for those who demand performance, precision, and exclusivity. Whether you're an HK enthusiast, a tactical shooter, or a collector, the MR556 A1 75th Anniversary is a rare opportunity to own a legacy.
More Information
Brand Heckler & Koch
Action Semi-Automatic
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