is this ammo AP or not?

[LORD of WAR]

so i recently stumbled upon 4k rounds of 7.62x39mm @ $4/box

2k of it is in a sliver box marked as follows:

norinco
china north industries corporation
7.62x39mm cartridge
lead core bullet
steel case
non corrosive

the rounds in the box are have a steel case thats brown/plum in color and head stamped 71 on top 93 on bottom

the other 2k is in a yellow box marked as follows:

norinco
china north industries corporation
7.62x39mm
steel case
non corrosive

again the round is brown/plum and stamped 71/92

i may be wrong but i thought i read somewhere a while back yellow box norinco was AP ammo...it doesnt say anywhere if it is or not

anyone have any clue about this stuff??? is it legit non corrosive? i dont shoot ANY corrosive ammo so i wont be buying it if it is even slightly corrosive

 

[vellnueve]

I've shot plenty of both. Yes, non-corrosive, and no, not AP that I know of.