The BILL 2 is armed with a pair of vertically striking explosively formed penetrator warheads, which each direct a self-forging slug of metal downwards at extreme velocities using a high explosive blast. The 40 mm frontal "precursor" warhead destroys any reactive armour protecting the target and leaves the 110 mm rear warhead to penetrate the armour. Total penetration capabilities are classified, but are known to be at least 550 mm in rolled homogeneous armor.
The BILL 2 is a weapon system with two vertically firing penetrator warheads, each designed to penetrate armor using high explosive blasts and self-forging slugs. The 40mm frontal "precursor" warhead destroys reactive armor, allowing the 110mm rear warhead to penetrate the target's armor.  The total penetration capabilities are classified but are known to be at least 550 mm in rolled homogeneous armor.