US Cartridge, 30mm HE, XM552
The cartridge XM552 is a high explosive, dual purpose (fragmentation and shaped charge), impact initiated round. The cartridge contains a point initiating, base detonating (PIBD) fuze XM579 which is graze sensitive. The fuze will detonate the projectile at angels of impact, from 90 degrees to a low-graze angle. The cartridge contains a primer, a propellant charge, and a high-explosive projectile.