HEPF [formerly Heavy Alloy Penetrator Project (HAPP)], is a premier organization manufacturing anti-tank kinetic energy projectiles namely Fin Stabilized Armour Piercing & Discarding Sabot (FSAPDS) of various caliber. This is the only Unit manufacturing FSAPDS shots in the country. During early 1980s DRDO established this integrated manufacturing facility for FSAPDS ammunition. This ammunition is a nightmare for the enemy and has got the capability to destabilize the enemies Battle Tank by sheer Kinetic energy. Besides kinetic energy projectiles, HEPF is also engaged in the manufacture of various Tungsten Alloy based components. The factory is located in a rural setting and is about 21 KM away from Tiruchirappalli Railway station and 17 Km away from the Airport.