#152mm

The XM803 stands as a daring experiment in American tank design, conceived from the ambitious MBT-70 program. Initially envisioned as a next-generation main battle tank to replace the aging M60 family, the XM803 was engineered to combine overwhelming firepower with exceptional mobility. Outfitted with a cutting-edge 152 mm XM150E6 gun/launcher, advanced targeting systems, and a two-plane gun stabilizer paired with an autoloader, it promised to redefine battlefield engagement. Yet, in its quest to balance performance and cost, the XM803 sacrificed armor protection and crew survivability making it a high risk, high reward vehicle that rewards skilled, hit-and-run tactics with its incredible mobility and firepower.