CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

M50 Joint Service General Purpose Mask

Gas mask used by the US military

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 5, 2026
Entity authorityQ4043361
Source-derived summary

The M50 series protective mask, officially known as the Joint Service General Purpose Mask (JSGPM or JSGPM/M50), is a lightweight, protective mask system consisting of the mask, a mask carrier, and additional accessories. It was adopted by the U.S. military in 2006 and is manufactured by Avon Rubber, the rubber-producing department of Avon Protection. There are two variants, the M50, for ground and shipboard use, and the M51, for ground vehicle use.

The mask was designed to incorporate state-of-the-art technology to protect soldiers from current and anticipated threats from all types of weapons of mass destruction. It is an above-the-neck, chemical-biological (CB) respirator that protects against battlefield concentrations of CB agents, toxins, toxic industrial materials, and radioactive particulate matter.

The M50/51 masks replace the M40 field protective mask and M42, the MCU-2/P series masks, and the M45 of the Land Warrior Program.

History

The M50 series mask entered service in December 2006. In July 2014, Avon Protection received a contract to supply 135,000 M50s for $33 million. In March 2016, it was announced that 166,623 M50s were purchased by the Department of Defense (DOD) under a $42 million contract.

Design

The M50 series is certified to MIL-SPEC PRF-EA-10003.

Editorial summary

“M50 Joint Service General Purpose Mask” enters the record as gas mask used by the US military. Crown Archives preserves that source wording while asking what Joint, Service and General can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2006, 2014, 2016—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Joint, Service and General.
Editorial analysis

Why this record matters

“M50 Joint Service General Purpose Mask” is worth following because a concise public description often conceals a longer documentary argument. Here, Joint, Service and General provides the most credible route into that argument.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 5, 2026. The linked authority identifier is Q4043361. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2006, 2014 and 2016.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “M50 Joint Service General Purpose Mask”, its source revision and the description used here.
  2. Expand the search: follow M50 Joint Service General Purpose Mask primary sources, M50 Joint Service General Purpose Mask archive and Joint research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “M50 Joint Service General Purpose Mask”?
  2. What terminology or title could unlock a more precise catalogue search?
  3. Which institution is responsible for the underlying evidence?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from M50 Joint Service General Purpose Mask” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.