Constantly searching for a technological edge on the battlefield, the Clans and the nations of the Inner Sphere have now taken to refitting proven, classic 'Mech designs with new technology to produce machines of awesome destructive power. BattleTech Record Sheets: Upgrades provides more than 170 filled-out record sheets for BattleMech, ProtoMech, and vehicle variants and configurations for the standard 'Mech designs presented in Technical Readouts: 3050, 3055, 3058 and 3060.