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TM 3-1055-456-12 66mm, 4-Tube, M202A1 Rocket Launcher (NSN 1055-00-021-3909) Technical Manual Change 1 Dated: 1975
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This TM 3-1055-456-12 66mm, 4-Tube, M202A1 Rocket Launcher (NSN 1055-00-021-3909) Technical Manual Change 1 Dated: 1975, is a U.S. Army technical manual update for the 66mm, 4-Tube, M202A1 Rocket Launcher, identified under NSN 1055-00-021-3909. This change was issued specifically for the TM 3-1055-456-12 technical manual printed on March 14, 1975, making it an important companion document for collectors, researchers, restorers, and anyone building a serious reference library around U.S. military rocket launcher systems and Cold War Army technical literature.
Unlike a full base manual, this item is an official Change 1 publication. That means it was issued to revise and update the original manual rather than replace it outright. For collectors, that matters. Army manuals were routinely kept current through numbered changes, and surviving change issues help document how technical guidance, operating information, and maintenance procedures evolved while the equipment remained in service. In that sense, this is not just an insert. It is part of the actual service history of the manual.
The 66mm, 4-Tube, M202A1 Rocket Launcher
The M202A1 belongs to the class of multi-shot 66mm shoulder-fired rocket launchers developed for specialized infantry support roles during the Cold War period. Unlike single-shot disposable launchers, a four-tube launcher gave the operator multiple ready rounds in one firing unit, making it a distinctive design within the broader family of U.S. rocket launchers.
That makes this manual especially interesting to collectors. It documents a less common launcher format and preserves the technical side of a weapon system that stands apart from more familiar single-shot launchers and standard infantry arms. Because it covers the M202A1, it is also useful for anyone interested in the development and service support of 66mm launcher systems in the mid-1970s.
What This Manual Change Covers
As a technical manual change, TM 3-1055-456-12 Change 1 would have been issued to revise and update the information contained in the original March 14, 1975 printing of the manual.
In practical terms, publications like this are especially relevant for:
Because it is a Change 1 issue, it is especially useful for collectors who want to pair it with the original base manual and preserve the manual as it was actually updated and used in service.
Historical Significance
The date 1975 places this publication in the later Vietnam / Cold War period, when the U.S. military was still documenting and refining specialized infantry support weapons and their supporting technical literature. Manuals like this reflect a period when weapon-system documentation was expected to cover not only operation, but also the revisions needed to keep field-use guidance current.
For collectors and historians, this manual change is especially relevant to subjects such as:
Because it is a change issue, it also appeals to collectors who appreciate the way military manuals were actually maintained in service rather than preserved only as first-print base editions.
About This Item
This listing is for TM 3-1055-456-12 66mm, 4-Tube, M202A1 Rocket Launcher (NSN 1055-00-021-3909) Technical Manual Change 1 Dated: 1975. It was issued for the March 14, 1975 print of the original TM 3-1055-456-12 manual covering the launcher identified under NSN 1055-00-021-3909.
It is especially well suited for:
Because manuals were working documents, surviving examples are valued not only for their content, but also for their connection to real military training, operation, and maintenance practice.
Why This Manual Matters
Many military manuals focus only on base editions, but change sheets are a major part of how Army documentation was actually used in service. This item adds a layer of authenticity and completeness that a base manual alone does not always provide.
For collectors, it is a useful companion piece to the original 1975 TM 3-1055-456-12. For researchers, it helps document the continued support history of the M202A1 66mm, 4-tube rocket launcher. For museums, it adds context to the administrative and technical side of a less common U.S. launcher system.
Ideal For
This manual is a strong fit for:
Approx length 11", Approx width 8", Approx height .1", Approx weight .2lbs.
Pictures are stock images of our TM 3-1055-456-12 66mm, 4-Tube, M202A1 Rocket Launcher (NSN 1055-00-021-3909) Technical Manual Change 1 Dated: 1975. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item's general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.
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