The RMS-179 GM II is a lightly modified RGM-79 GM designed by the Earth Federation shortly after the One Year War concluded. The RMS-179 GM II had a tight development budget and only improved the performance by a small margin. However, these improvements kept the RMS-179 GM II on the battlefield almost 20 years after its inception during the events of the Mobile Suit Gundam Unicorn animated series.

The accessories for the RMS-179 GM II are as follows:

• Beam Rifle
• Shield
• Beam Saber