M340 autocannon

The 40mm chain gun is an anti-personnel/anti-vehicle weapon mounted on the nose of some D77-TC Pelican dropships.

Design details
This chaingun fires 40mm ammunition.

Usage
The 40mm chaingun was a weapon employed on Pelican dropships prior to around 2525. By this time, the chaingun had been superseded by the M370 70mm autocannon. By 2525, a Pelican equipped with such a weapon was docked in the United Rebel Front stronghold of Eridanus Secundus.

Production notes
In the Halo Legends short Homecoming depicts a D77-TC Pelican dropship armed with a nose-mounted weapon unlike the M370 70mm autocannon depicted as standard on most Pelican dropships, which may possibly be the 40mm chaingun. However, the short takes place far in the Human-Covenant War, long after the time period in which the 40mm chaingun is said to have been retired. It is possible that the 40mm chaingun retained in service in back-line units and older garrisons, and thus continued to see sporadic usage in the later years of the war.

The design shown in Homecoming bears a strong visual resemblance to a concept design of the D77H-TCI Pelican shown in The Art of Halo 3, page 38.

List of appearances

 * Halo: The Fall of Reach