Major defence stocks witnessed a sharp rally in opening trade on Tuesday after the Defence Acquisition Council (DAC) approved capital acquisition proposals worth about Rs 2.12 lakh crore for the armed forces. MTAR Technologies, Apollo Micro Systems, Data Patterns (India), Paras Defence and Astra Microwave Products were among the biggest gainers in the early trade. Hindustan Aeronautics (HAL), Bharat Electronics (BEL), Bharat Dynamics (BDL) and Solar Industries India also traded higher.