RX-79[G]Ez-8 Gundam Ez8

As the Earth Federation Forces concentrated their manufacturing efforts on the production of their new mass-produced RGM-79 GM units during the latter months of the One Year War, those mobile suits already fielded had to make do with what few materials were available. Since the RX-79[G] Gundams were themselves built using spare parts, there were no more spare parts left to effect repairs to heavily damaged units, and field engineers had to literally rebuild mobile suits with whatever they could find. When Ensign Shiro Amada's RX-79[G] was trashed in an attempt to stop Zeon's prototype Apsalus II mobile armor in November UC 0079, the Kojima Batallion's engineers and mechanics rebuilt his mobile suit with many improvised modifications.

The RX-79[G]Ez-8 Gundam Ez8 (short for "extra zero-eight") retained the same beam sabers in the legs, as well as the standard RX-79[G] hand armaments. However, its other fixed weapons were changed out, with a pair of 35mm machine guns mounted in the head and a turret-mounted 12.7mm anti-personnel machine gun in the chest. The Ez8's armor plating and placement was improved overall, and the traditional Gundam "V-fin" on the head was replaced with a sturdier communications antenna. The Ez8 did retain the backpack equipment rack from the standard RX-79[G], allowing it to keep its ability to mount parachute packs or other field equipment options.

edit: concept credit to illsteir.

modified off my initial model of Rx-79 [link]