At the end of Universal Century 0079, following the success of the Operation to Recapture Odessa, the military balance of the One Year War began to tilt heavily in favor of the Earth Federation Forces... As the front lines expanded, MS development accelerated, resulting in the succession of derivative and later models of mass-produced MS. Among these, the mass production of a medium-range support MS was reconsidered, and the RX-77D Mass-Produced Guncannon was rolled out, a cost-cutting version based on the prototype "Heavy Type." This unit boasted specifications that surpassed the RX-77, but with mass production of the GM type taking priority towards the end of the One Year War, only a small number were produced.

And so, one of the few units produced was the Ti

HGUC Mass-Produced Guncannon (Titan Direct Escort Force Specification) | モトッチ's Gunpla works