
M136 AT4
Disposable shoulder-fired light anti-armor recoilless weaponThe catalog's M136 AT4 entry is the current weapon record tied to this legacy builder facet.
Manufacturer catalog
Alliant Techsystems, usually abbreviated ATK, was a U.S. aerospace, defense, and ammunition contractor formed from Honeywell's 1990 spin-off and later folded into Orbital ATK and Northrop Grumman. In this catalog it anchors the legacy manufacturing line behind the M136 AT4 and ATK-era defense production.
4 weaponsAlliant Techsystems was formed in 1990 when Honeywell spun off defense-related businesses into a separate company. By its 2014 SEC filing, ATK described itself as an aerospace, defense, and commercial products company headquartered in Arlington, Virginia.
For this catalog, ATK matters because it is the legacy manufacturer facet behind the catalog's M136 AT4 entry and because its corporate line continued through Orbital ATK and eventually Northrop Grumman Innovation Systems.

The catalog's M136 AT4 entry is the current weapon record tied to this legacy builder facet.
ATK's SEC filings describe the company as a major producer of military ammunition for U.S. government, allied, law-enforcement, and commercial customers.
Sources: ATK 2014 Form 10-KATK's aerospace and defense businesses included propulsion work and rocket-motor production that carried forward into the Orbital ATK successor line.
Sources: ATK 2014 Form 10-K, Orbital ATK 2015 Form 10-K, Orbital ATK acquisition informationSEC filings state that Alliant Techsystems was incorporated in May 1990 as a Delaware corporation tied to Honeywell's defense-business spin-off.
Sources: ATK 2001 Form 10-K
The same SEC history says the spin-off became effective in September 1990 when Honeywell transferred the relevant assets and liabilities to ATK.
Sources: ATK 2001 Form 10-K
Orbital ATK's 2015 filing says the combined company was formerly Alliant Techsystems Inc. and changed its name to Orbital ATK after the spin-off and merger.
Sources: Orbital ATK 2015 Form 10-K
Northrop Grumman says it completed the acquisition of Orbital ATK on 6 June 2018, extending the legacy ATK line into Northrop Grumman Innovation Systems.
Sources: Orbital ATK acquisition information
ATK is a legacy builder name with a short corporate life and multiple successor names, so this profile uses SEC filings plus Northrop Grumman successor material to preserve the company line. No live official ATK corporate website was verified during research, so the historical domain is retained in the website field for continuity.
Category
Portable weapons used by soldiers and small units.
Category
Standalone missiles, bombs, rockets, torpedoes, and guided or unguided explosive payloads.


