A fictional [[mecha]] that first appeared in [[Mobile Suit Gundam]] (1979). 

The [b]GM[/b] ([b]Gundam Mass Production[/b]), also referred simply as the [b]Jim[/b], is an [[Earth Federation]] mass production all-environment, generic, multi-role combat [[mobile suit]] based off the design and data obtained from the learning computer of the [[RX-78-2|RX-78-2 Gundam]] more advanced prototype.

It is far less powerful and durable than the original Gundam due to heavily simplified and low-grade parts, but much cheaper to mass produce and easier to maintain, modify and repair. Due to its generally poor performance (being often depicted as a "cannon fodder" of some sort within the series), it spawned several variants, each with an attempt to make the mobile suit on-par with the more modern Gundams and whatever they were pitted against.

In [[real life]], it was designed by [[Ookawara Kunio]] in the late [[1970s_(style)|70s]], and was inspired by the [[M4 Sherman]] [[tank]]s of [[World War II]]. The mecha was also called the [b]Jimmy[/b] in the [[Genshiken]] anime comedy series.

h4. Variations of the GM
* [[Ground GM]]
* [[GM Cold Districts Type]]
* [[GM Striker]]
* [[GM Sniper]]
* [[GM Sniper Custom]]
* [[GM Sniper II]]

* [[GM Spartan]]

* [[GM Cannon]]
* [[GM Cannon II]]
* [[GM Custom]]

* [[GM Command]]

* [[GM Kai]]
* [[Powered GM]]

* [[GM II]]
* [[GM III]]

h4.See also
* [[Nemo (mobile suit)]]
GM(機動戦士ガンダム) ジムシリーズ ジム(機動戦士ガンダム)