HE = High Explosive (AA) :
Type: MkIIIT
Mass: 0.93 kg
Projectile spec: HighExplosive 0.5 kg / Fragmentation 0.067 kg of TNT
MuzzleVelocity: 875 ms
Fuse type: Timeout
Projectile lifeSpan: 20 sec
AP = Armor Piercing (used against the panzer) :
Type: MkI
Mass: 0.88 kg
Projectile spec: ArmorPiercing 0.4 kg / Concussion 0.05 kg of TNT
MuzzleVelocity: 875 ms
Fuse type: Contact
Projectile lifeSpan: 20 sec
http://forum.1cpublishing.eu/showthread.php?t=29684