Description
Technical Manual Change 1 (TM 9-1005-233-25) for 7.62mm M73 and M73E1 Machine Guns January 1969
Add a specialized piece of Vietnam War-era armored vehicle weapons documentation to your collection with this Technical Manual Change 1 for TM 9-1005-233-25, covering the 7.62mm M73 and M73E1 Machine Guns. Dated January 1969, this change notice updates the original TM 9-1005-233-25, issued May 25, 1967.
This is the Change 1 update only, not the full base manual. For collectors, that makes it a useful companion piece for completing the official documentation history of the M73 tank machine gun family.
Historical Significance
The M73 Machine Gun was a Cold War-era 7.62mm NATO tank machine gun developed for armored vehicle use. It was designed specifically as a fixed tank machine gun and was standardized in 1959 after a long development program. It used a quick-change barrel, could feed from either side, and was intended for flexible armored vehicle installation.
The M73E1 represented an improved development of the M73. Its key improvement was a simplified ejection system, created to address reliability problems in the original M73 design. Later references note that the M73E1 designation was tied into the later M73A1 / M219 development path.
That makes this January 1969 Change 1 especially interesting. It documents the M73 family during the period when the Army was actively supporting and improving 7.62mm tank machine gun systems for Cold War armored vehicles.
The M73 and M73E1 Tank Machine Gun Connection
The M73 was not a general infantry machine gun. It was built for the armored vehicle environment. It belonged to the same world as tank coaxial guns, cupola-mounted weapons, vehicle fire-control systems, and Cold War armored fighting vehicle support equipment.
The M73 family was used as part of the secondary armament on vehicles including the M48A3, M60-series tanks, M551 Sheridan, and M728 Combat Engineer Vehicle. The M551 Sheridan reference also lists the 7.62mm M73, M73E1, M219, or M240 as coaxial machine gun options tied to the 152mm gun-launcher system.
For collectors, this change notice connects directly to the armored vehicle weapons systems of the Vietnam War and Cold War period.
What This Change Covers
As Change 1 for TM 9-1005-233-25, this publication updated the Army’s maintenance and support documentation for the 7.62mm M73 and M73E1 Machine Guns.
This manual change is especially relevant for:
- M73 Machine Gun documentation
- M73E1 Machine Gun documentation
- TM 9-1005-233-25 revision history
- M48A3 and M60-series tank reference collections
- M551 Sheridan and M728 vehicle research
- 7.62mm NATO armored vehicle machine gun displays
- collectors completing an M73 technical manual set
Later Army documentation continued the M73 family under the TM 9-1005-233 manual series, covering the M73, M73A1, and M219 machine guns in organizational, direct support, and general support maintenance publications.
Key Features
- Technical Manual Change 1 for TM 9-1005-233-25
- Covers the 7.62mm M73 Machine Gun
- Covers the 7.62mm M73E1 Machine Gun
- Dated January 14, 1969
- Updates the original manual issued May 25, 1967
- Vietnam War-era U.S. Army technical manual update
- Connected to Cold War tank and combat vehicle armament
- Strong reference for M48, M60, M551, and M728 vehicle collectors
- Useful companion piece for completing an M73 / M73E1 manual set
Why This Manual Change Matters
The M73 represents a very specific part of Cold War armored vehicle design. It was created for tank and armored vehicle use, not as a general-purpose infantry gun. That makes the documentation especially valuable to collectors who study complete vehicle weapon systems rather than small arms alone.
This Change 1 update helps preserve the Army’s technical paperwork trail for the M73 and M73E1 during an important improvement period. Manual changes were working documents. Many were separated from their original manuals over time, which makes surviving examples useful for collectors trying to complete a full publication set.
It pairs well with M48 Patton manuals, M60 tank references, M551 Sheridan documentation, M728 vehicle manuals, 7.62mm NATO ammunition displays, and Cold War armored vehicle technical manual collections.
About This Manual Change
This listing is for Technical Manual Change 1 for TM 9-1005-233-25, covering the 7.62mm M73 and M73E1 Machine Guns, dated January 1969.
This listing is for the Change 1 update only unless otherwise stated. No complete base manual, machine gun, firearm, receiver, barrel, armored vehicle, cupola, mount, ammunition, belts, links, tools, repair parts, storage case, or additional accessories are included unless specifically shown or noted.
Ideal For
This manual change is a strong fit for:
- M73 Machine Gun collectors
- M73E1 Machine Gun reference collections
- M48A3 and M60-series tank displays
- M551 Sheridan and M728 vehicle research
- Vietnam War-era armor documentation collections
- Cold War U.S. Army technical manual collections
- 7.62mm NATO tank machine gun reference libraries
- museum and archival reference displays
- collectors completing a TM 9-1005-233-25 manual set
Approx length 10", Approx width 8", Approx height .25", Approx weight 1lbs.
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