JnC Manufacturing Semi-Auto Browning M2HB .50 BMG, High Standard Marked, 45 in Heavy Barrel, Phosphate Finish
This JnC Manufacturing semi-automatic Browning M2HB stands out for its authentic receiver markings and robust .50 BMG configuration. The left side carries High Standard Mfg. Co. New Haven, Conn. U.S.A.
legends with Browning Machine Gun Cal. .50 M2 and patent lines, while the right side is marked by JnC Manufacturing, Rainier, OR, Semi-Auto. It features a heavy 45-inch barrel, a matte gray/green phosphate finish, and the classic belt-fed flexible layout with spade grips and a butterfly trigger.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: There is visible surface rust and pitting in various areas, producing a war-like patina. The bore shows well-defined rifling and remains in good shape. The firearm will ship disassembled; verify headspace and timing upon receipt. Timing gauges are not included; a headspace gauge is included.
What’s Included
- Tripod front spindle with yoke (tapered pintle)
- Headspace gauge
- M7 linking and delinking machine
Built in the United States, this semi-auto M2HB uses a short-recoil, closed-bolt action and is chambered in .50 BMG. The right receiver is clearly marked by JnC Manufacturing as a semi-automatic build, while the left receiver bears the High Standard Browning Machine Gun markings and U.S. patent lines for period-correct detail.
The heavy 45-inch barrel and belt-fed flexible configuration are paired with the classic spade-grip backplate and butterfly trigger. A right-side charging slot, hinged top cover, and visible belt-feed pawls support the familiar M2HB manual of operation in a semi-automatic format.
The riveted steel sideplate receiver wears a matte gray/green phosphate finish that matches the overall presentation. Bottom mounting points are present on the receiver, and the sale includes a tripod front spindle with yoke (tapered pintle) to interface with appropriate mounting hardware.
Iron sights include a hooded blade front and a folding ladder rear, offering a traditional sighting setup for this platform. The package also includes an M7 linking and delinking machine for managing belts, as well as a headspace gauge.




