Description
Add a specialized piece of Cold War armored vehicle weapons documentation to your collection with this Technical Manual TM 9-1005-231-35P for the Caliber .50 M85 Fixed Machine Gun. Dated November 1961, this manual is a Field and Depot Maintenance Repair Parts and Special Tools List for the M85, a compact .50 caliber machine gun designed for armored vehicle cupola use.
Historical Significance
The M85 Machine Gun represents a focused chapter in Cold War armored vehicle design. It was not a standard infantry heavy machine gun. It was developed as a fixed .50 caliber weapon for armored vehicle cupola installations, giving crews heavy machine gun capability from a protected position.
Army operator documentation describes the M85 as a recoil-operated machine gun designed for cupola mounting in armored vehicles. Its purpose was to provide armored vehicle crews protection against enemy ground troops and low-flying aircraft. The same source notes that the gun could be fired electrically by solenoid or manually, with selectable high and low rates of fire.
That makes this November 1961 35P manual especially desirable for collectors of M60 tank equipment, M85 machine gun references, tank cupola systems, and Cold War armored vehicle ordnance.
The M85 Fixed Machine Gun
The M85 was designed around armored vehicle service. It featured a compact receiver, fixed headspace, quick-change barrel with flash suppressor, and the ability to be configured for right- or left-hand feed. Army documentation states that left-hand feed was used on M60, M60A1, and M60A3 tanks, as well as M728 vehicles.
This gives the manual strong collector value because it connects directly to the fighting equipment inside Cold War armored vehicles. It fits especially well with collections focused on:
- M85 fixed machine gun documentation
- M60-series tank equipment
- M728 armored vehicle weapons
- tank commander’s cupola systems
- .50 caliber armored vehicle machine guns
- Cold War U.S. Army technical manuals
What This Manual Covers
As a 35P technical manual, TM 9-1005-231-35P focuses on the repair-parts and special-tools side of the M85 support system. This type of manual is especially useful for collectors, restorers, museums, and researchers who want component-level documentation rather than basic operator-level information.
This manual is especially relevant for:
- M85 Machine Gun parts documentation
- field and depot maintenance research
- repair parts and special tools identification
- armored vehicle cupola weapon reference
- M60-series tank research
- M728 vehicle weapons documentation
- Cold War ordnance technical manual collections
A later M85 operator manual lists the modern NSN as 1005-00-690-2790, confirming the later national stock-number associated with the Machine Gun, Caliber .50, Fixed, M85.
Key Features
- Technical Manual TM 9-1005-231-35P
- Covers the Caliber .50 Machinegun M85 (Fixed)
- Dated November 1961
- Department of the Army technical manual
- Field and Depot Maintenance Repair Parts and Special Tools List
- Connected to armored vehicle cupola-mounted .50 caliber systems
- Associated with M60, M60A1, M60A3, and M728 vehicle applications
- Strong Cold War armored vehicle collector subject
- Useful reference for M85, M60 tank, and .50 caliber machine gun collectors
- Excellent companion piece for M85 operator, maintenance, and parts manual collections
Why This Manual Matters
The M85 was built for a very specific military problem: giving armored vehicle crews protected .50 caliber firepower from inside a cupola-mounted weapon station. That makes it an important subject for collectors who study complete vehicle weapon systems, not just the vehicle hull or main gun.
This manual preserves the parts and support side of that system. It belongs with M60 tank manuals, M728 vehicle references, M85 operator manuals, tank cupola documentation, .50 caliber ammunition displays, and Cold War armor collections.
About This Manual
This listing is for Technical Manual TM 9-1005-231-35P, covering the .50 Cal M85 Fixed Machine Gun, dated November 1961.
This listing is for the manual only unless otherwise stated. No machine gun, firearm, receiver, barrel, cupola, tank, armored vehicle, ammunition, belts, links, special tools, repair parts, storage case, or additional accessories are included unless specifically shown or noted.
Ideal For
This manual is a strong fit for:
- M85 Machine Gun collectors
- M60, M60A1, and M60A3 tank reference collections
- M728 armored vehicle displays
- Cold War U.S. Army technical manual collections
- .50 caliber machine gun documentation libraries
- tank cupola and armored vehicle weapon research
- field and depot repair-parts manual collectors
- museum and archival reference displays
Approx length 10", Approx width 8", Approx height .5", Approx weight 1lbs.
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