Description
Own a standout piece of World War II heavy air-defense history with this Technical Manual TM 9-380 for the 120mm Gun M1 and M1 Antiaircraft Mount. Dated January 1945, this manual is tied to one of the most impressive U.S. antiaircraft gun systems of the war.
The 120mm Gun M1 was nicknamed the “Stratosphere Gun” because of its extreme altitude reach. U.S. Army historical coverage describes the M1 120mm antiaircraft gun as a massive 29.5-ton weapon and notes that it could fire shells about 10 miles into the sky.
Historical Significance
The 120mm M1 represented the top end of U.S. gun-based air defense during World War II. It complemented the smaller and more mobile 90mm antiaircraft guns, giving Army antiaircraft units a heavier weapon for high-altitude defense.
The Army Historical Foundation notes that the 120mm gun had a maximum vertical range of nearly 58,000 feet, earning it the “Stratosphere Gun” nickname. It also lists a rate of fire of 10 to 15 rounds per minute, with each round weighing about 50 pounds.
This manual’s January 1945 date gives it strong collector appeal. It was issued during the final year of World War II, when heavy antiaircraft artillery was still a major part of air-defense planning. It also connects to the early Cold War period, when the 120mm gun remained in service before missile systems took over.
The 120mm M1 “Stratosphere Gun”
The 120mm M1 Gun was not a common light field piece. It was a large, high-altitude antiaircraft weapon built for serious air-defense work.
The system belonged to the era of radar-directed gun batteries, heavy mounts, large crews, and fixed defensive positions. The Army Historical Foundation notes that although the 120mm gun was intended to be mobile, it was mainly used in fixed sites. It remained in AAA service from 1944 through the early Cold War period before being replaced by Nike-Ajax surface-to-air missiles.
That makes this manual especially interesting. It documents one of the last major generations of large antiaircraft guns before missiles changed the air-defense mission.
What This Manual Covers
As a technical manual for the 120mm Gun M1 and M1 Antiaircraft Mount, TM 9-380 would have served as an official War Department reference for the weapon and mount system.
This manual is especially relevant for:
- 120mm M1 Gun documentation
- M1 Antiaircraft Mount reference
- World War II heavy antiaircraft artillery research
- early Cold War air-defense history
- U.S. Army Ordnance Department collections
- restoration and museum reference libraries
Technical manual index records list TM 9-380 as 120-mm Gun M1 and Antiaircraft Mount M1, published by the War Department in January 1945, with 272 pages.
Key Features
- Technical Manual TM 9-380
- Covers the 120mm Gun M1
- Covers the M1 Antiaircraft Mount
- Dated January 1945
- War Department technical manual
- Listed as 272 pages
- Strong World War II / early Cold War air-defense subject
- Connected to the famous “Stratosphere Gun”
- Excellent reference for antiaircraft artillery collectors
- Strong fit for museum, archive, restoration, and technical manual collections
Why This Collectible Stands Out
Many military manuals cover common rifles, vehicles, or shop equipment. This one covers a massive U.S. heavy antiaircraft gun with a nickname that collectors remember.
The 120mm M1 represents the peak of gun-based U.S. air defense before guided missiles changed everything. It is big, historically important, and visually impressive as a subject. That gives this manual strong “cool factor” for serious ordnance collectors.
For a collection focused on World War II artillery, air-defense weapons, Coast Artillery, early Cold War AAA units, or Nike missile transition history, this manual is a strong addition.
About This Manual
This listing is for Technical Manual TM 9-380 for 120mm Gun M1 and M1 Antiaircraft Mount, dated January 1945.
This listing is for the manual only unless otherwise stated. No 120mm gun, antiaircraft mount, ammunition, fuze setter, director, radar equipment, tools, parts, accessories, or additional equipment are included unless specifically shown or noted.
Ideal For
This manual is a strong fit for:
- World War II U.S. Army technical manual collections
- 120mm M1 “Stratosphere Gun” displays
- heavy antiaircraft artillery reference libraries
- early Cold War air-defense collections
- U.S. Army Ordnance Department publication collections
- Coast Artillery and AAA history displays
- museum and archival reference collections
- serious ordnance and artillery historians
Approx length 9", Approx width 6", Approx height .75", Approx weight 1lbs.
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