The difference between M2A2 ammo types?

[ChristianWagner]

Hello!

Please, can you tell me what does KE stand for?

And what is the difference between Heat / Heat L / Heat H ?

Bye
Christian

[GaryOwen]

KE is kinetic energy or armor piercing, the 'L' & 'H' refer to low rate of fire (~100 rpm) and high rate of fire (~200 rpm).