Greasegun
M3A1 history
The
M3, nicknamed "Grease Gun", entered service in late
1942. The design of the M3 was conducted in parallel with research
on improving the production of weapons. Thus, the M3 was made
from compressed pieces of metal and has proved to be much easier
to produce than the Thompson
submachine gun, and a lower cost production.
Between December 1942 and 1944, period during which the model
M3 was used, many failures have been reported, failures corrected
in the next version, called the M3A1, produced in 1944.
With a retractable butt (ie adaptable), an "average"
weight and a relatively low rate of fire (350-450 rounds per minute),
the Grease Gun appears to be a handle submachine gun, more than
other American submachine guns.