SMPP, an S M Group company is the leading Indian manufacturer of various components for Tank and Artillery ammunitions for the Indian Army. It was among the first to develop and manufacture Combustible Cartridge Cases for 120mm and 125mm caliber tank ammunitions in India. It has been closely associated in the developmental efforts of HEMRL (High Energy Materials Research Laboratory), which is a part of DRDO (Defense Research & Development Organisation), Ministry of Defense.

SMPP has played a key role in meeting the specific ammunition needs of the Indian Army for MBT ARJUNA, T-72 & T-90 series of Russian Guns and 155mm Artillery Gun.

S M Group is today one of the leading manufacturers of combustible cartridge cases in the world. It is the only company to receive NATIONAL AWARD for Indigenization of combustible cases from Ministry of Defense, Govt. of India