Rare and Near Mint Heckler & Koch Factory Original G3 Selective Fire Battle Rifle, Class III/NFA C&R Fully Transferable Machine Gun

A remarkable collector-grade Heckler & Koch G3 with reported Harrington & Richardson factory museum provenance and pre-1968 fully transferable registration status, making it an especially desirable Class III/NFA collectible. As one of the defining European battle rifles of the Cold War era, this G3 combines major military history, scarce U.S. transferability, and highly sought-after HK factory full-auto configuration.

• Heckler & Koch G3 historical significance:
  • Introduced in 1959
  • Developed from a long international design lineage that began in Germany late in World War II, continued through France and Spain, and returned to Germany
  • Became the forefather of a generation of European infantry weapons
  • Served as a foundational rifle in the German military arsenal throughout the Cold War and beyond
  • Although no longer Germany’s primary infantry rifle, the G3 remains in use in designated marksman rifle roles
  • Still serves with a large number of nations worldwide
• Distinctive HK operating system:
  • Built around Heckler & Koch’s roller-locked delayed-blowback action
  • This system stood apart from the gas-operated rifles that were the standard of the era
  • The design was later adapted into many calibers and configurations, increasing the G3’s importance in modern military firearm development
• Reported provenance and collector appeal:
  • Reportedly once part of the Harrington & Richardson factory museum collection
  • The H&R museum collection housed a number of similar machine guns and developmental firearms
  • Reportedly brought into the United States and registered as a Heckler & Koch factory-made fully transferable machine gun before the 1968 changes to import and registration rules
  • This pre-1968 transferable status makes it a rare and highly desirable Class III item
  • Harrington & Richardson sold off its museum collection after the company went bankrupt in the mid-1980s
• Date markings on major components:
  • Bolt marked “HK 5/65”
  • Carrier marked “HK6/65”
  • Stock iron marked “HK 2/67”
• Exterior features and configuration:
  • Hooded post front sight
  • Four-position drum rear sight
  • Birdcage flash hider
  • Functional bayonet lug slot
  • Ribbed narrow forearm
  • Welded reinforcement collar at the breech
  • Functional “paddle” magazine release
  • Right-handed selector with “Safe/SA/FA” markings
  • Textured pistol grip
  • Two-position telescoping buttstock
• Markings:
  • Right side of the magazine well is blank
  • Left side of the magazine well is marked “HK G3 7,62 NATO/4741”
• Receiver and fire-control details:
  • Receiver, trigger housing, and trigger pack are in “pin” configuration
  • Bolt carrier is in factory-original full-auto configuration
• Included accessory:
  • One magazine included
  • Magazine is marked “IB” for 1981 on the left side
• A standout opportunity for advanced HK and Class III collectors, offering:
  • Reported H&R factory museum provenance
  • Factory-made Heckler & Koch full-auto configuration
  • Fully transferable machine gun status
  • Cold War military significance
  • Desirable G3 battle rifle lineage
  • Scarce and investment-grade collector appeal