Description
Technical Manual (TM 9-1005-247-12) for 7.62mm M2 Twin Machine Gun Armament Subsystem January 1964
Add a specialized piece of early Vietnam War helicopter armament documentation to your collection with this Technical Manual TM 9-1005-247-12. This manual covers the Armament Subsystem, Helicopter, 7.62mm Machine Gun – Twin, M2, used on OH-13 Series and OH-23D helicopters.
This is an Operator and Organizational Maintenance Manual, including Repair Parts and Special Tools Lists, for the M2 twin machine gun helicopter armament subsystem. A Small Arms Archive reference identifies this exact manual as TM 9-1005-247-12 for the 7.62mm Machine Gun – Twin, M2 subsystem used on OH-13 Series and OH-23D helicopters.
Historical Significance
The M2 helicopter armament subsystem belongs to the early period of U.S. Army armed-helicopter development. Before the Huey gunship became the dominant image of Vietnam War aviation, the Army was already adapting light observation helicopters for armed reconnaissance, escort, and fire-support roles.
The M2 system was used on the OH-13 Sioux and OH-23 Raven helicopters with twin 7.62mm M60C machine guns. Both the OH-13 Sioux and OH-23 Raven could be armed with twin M60C 7.62mm machine guns on the M2 armament subsystem, with the XM76 sighting system used for sighting the guns.
That makes this January 1964 manual especially desirable for collectors focused on early helicopter gunship development, Army aviation ordnance, and the transition from observation helicopters to armed rotary-wing platforms.
The M2 Twin Machine Gun Subsystem
The M2 subsystem should not be confused with the .50 caliber M2 Browning machine gun. In this context, M2 refers to the helicopter armament subsystem designation.
The weapon associated with this subsystem was the M60C, an aircraft version of the M60 machine gun. The M60C was electrically controlled, hydraulic power charged, air-cooled, gas-operated, and link-belt fed, with a listed firing rate of 500–650 rounds per minute. It also identifies the M60C as used on the M2 armament subsystem for the OH-13 Sioux and OH-23 Raven.
This manual connects directly to the early Army aviation weapons world of:
- OH-13 Sioux helicopter armament
- OH-23D Raven helicopter armament
- M60C aircraft machine gun systems
- XM76 sighting equipment
- Vietnam War-era scout and observation helicopter weapons
- U.S. Army helicopter armament subsystem manuals
What This Manual Covers
As TM 9-1005-247-12, this publication served as the Army’s operator and organizational maintenance reference for the M2 twin 7.62mm helicopter armament subsystem.
This manual is especially relevant for:
- M2 helicopter armament subsystem documentation
- OH-13 Series helicopter weapons research
- OH-23D helicopter weapons research
- M60C aircraft machine gun reference
- early Vietnam War helicopter gunship displays
- U.S. Army aviation ordnance manual collections
- museum and archival reference libraries
Military technical manuals were official working documents used to support identification, use, servicing, and field support of the equipment they covered, making them valuable to collectors, historians, researchers, and restorers looking for authentic reference material.
Key Features
- Technical Manual TM 9-1005-247-12
- Covers the 7.62mm M2 Twin Machine Gun Helicopter Armament Subsystem
- Used on OH-13 Series helicopters
- Used on OH-23D helicopters
- Issued January 1964
- Operator and organizational maintenance manual
- Includes repair parts and special tools list subject matter
- Associated with the M60C 7.62mm aircraft machine gun
- Connected to early U.S. Army helicopter armament development
- Strong Vietnam War / Cold War aviation ordnance collector subject
- Excellent reference for OH-13, OH-23, M60C, and helicopter armament collectors
About This Manual
This listing is for Technical Manual TM 9-1005-247-12, covering the 7.62mm M2 Twin Machine Gun Helicopter Armament Subsystem used on OH-13 Series and OH-23D helicopters, issued January 1964.
This listing is for the manual only unless otherwise stated. No helicopter, machine gun, armament subsystem, mount, sighting system, ammunition, tools, repair parts, storage case, or additional accessories are included unless specifically shown or noted.
Ideal For
This manual is a strong fit for:
- OH-13 Sioux collectors
- OH-23D Raven reference collections
- Vietnam War helicopter aviation displays
- M60C aircraft machine gun reference libraries
- U.S. Army aviation ordnance manual collections
- museum and archival reference libraries
Approx length 10", Approx width 8", Approx height .25", Approx weight 1lbs.
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