Main battle tank
The Greto T15 was Greto Vehicles' entry to the Gammetan request for main battle tank proposals. Its design began on April 25, 2012, when Greto accepted Gammeta's invitation to participate in the 4-GMBT request for proposals. On November 26, Armana's Vindicator GT was selected as the winning proposal, and thus the T15's development ceased.
The main difference, which Greto used as a selling point, compared to its competitors was that it used a shield as its main mode of protection against anti-armor projectiles. An obvious trade-off for the shield generator was armor, but it also sacrificed speed to make room for the shield generator, only just meeting the 100 km/h minimum speed. The radical concept of a shield did not suit Gammeta's cautious approach to vehicles for its new ground forces, and the superior design of the Vindicator won over the military.