MGR-3 Little John

It was primarily intended for use in airborne assault operations and to complement the heavier, self-propelled MGR-1 Honest John rocket.

The XM51 Little John was delivered to the field in November 1961 and remained in the regular Army's weapons inventory until August 1969.

The components were shipped in separate containers, with the warhead and motor assembled before issue and the igniter inserted immediately before use.

[1] A hand-wound mechanical clock spring on the launcher rotates the rocket through gears, when the firing lanyard is pulled.

The Phase II Little John weapon system was initially deployed with the 1st Missile Battalion, 57th Field Artillery in Okinawa, Japan.

XM51 production rocket, with small fins and short, lightweight XM34 launcher
The XM47 (large fins) was only an interim rocket, essentially a rocket test vehicle, and was used for training and testing purposes only.
DoD video showing MGR-3 Little John in army-testing in 1957, including transport by CH-37 helicopter.
Internal components of the Medium Atomic Demolition Munition . W45 warhead is to the right of the casing.