The M16 was a spin-stabilized unguided rocket developed by the United States Army during the Second World War. Entering service in April 1945 to replace the earlier fin-stabilised 4.5-inch M8 rocket, it was used late in the war and also during the Korean War before being removed from service.
Development Developed during the latter stages of the Second World War, the M16 was the first spin-stabilized rocket to be standardized for production by the United States Army.Parsch 2006 in length, it could hit targets as far as from its launcher.Comparato 1965, p. 295 The M16 was launched from T66 "Honeycomb" 3x8 24-tube launchers,Zaloga 2007, p.19 M21 5x5 25-tube launchers, and could also be fired from 60-tube "Hornet's Nest" launchers. The United States Marine Corps developed launching systems for the M16 rocket as well, capable of being fitted to standard 3/4 and 2.5-ton trucks. A version of the M16 rocket for single launchers, the M20, was developed as a derivative; practice rounds designated M17 and M21 were also manufactured.Ordnance Committee Minutes 27687, Research and Development Service, Office of the Chief of Ordnance. 17 May 1945.
During the Cold War years, various state and privately owned scientific institutions were engaged in the research and development projects, concerning development and enhancement of the U.S. Army spin-stabilized rockets, to mention California Institute of Technology, North Carolina State College of Agriculture of the University of North Carolina..
Operational history A unit of "Honeycombs" was deployed to the European Theater of Operations in May 1945, and saw limited action in Czechoslovakia before the end of the war; only being used in a single engagement.Bishop 1998, p. 175 Two of five battalions equipped with the M16 were deployed to the Pacific Theater of Operations, being stationed on Okinawa and in the Philippines, however the war ended before these units could see combat. The M16 remained in service with the U.S. Marine Corps following the war, with a single 18-launcher battery equipping each Marine Division; these saw combat service during the Korean War,Turner 1990, p.20 as did U.S. Army launchers, the M16 fired from the T66 launcher being considered one of the "principal artillery weapons in the Korean War inventory".
Variants M16 (T38E3) Baseline version adopted by U.S. Army M16E1 M16 rocket with deeper fuze cavity for V.T. Fuze M402 (Mk 173). M16E2 M16E1 with purge pellets of 411E to eliminate chunks in burning M17 Practice round for M16 rocket. M20 M16 variant with ignition wires attached to spools instead of contact rings. M21 Practice variant of M20 Rocket
Photo Gallery
Launchers T66 & T66E2 ("Honeycomb"): Towed, 24 tube. The E2 incorporated multiple improvements such as a new elevation system, blackout lighting, and sights. The 60-tube variant (designation needed), was nicknamed "Hornet's Nest". M21 (T123): Towed, 25 tube. Unusual in that it used square, rather than round, tubes.
See also Katyusha rocket launcher List of U.S. Army rocket launchers by model number Multiple rocket launcher Nebelwerfer
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