Both are 7.62x39, both are Chicom mags. The first one (pic) is Chicom with a spine, and along the spine I find the stamps :
6(?) F CNZ AJ
Any ideas?
Pic:
The second one is a standard type flatback Chinese mag, with 3 witness holes along the back, and the floorplate says:
30 RD MAGAZINE
MADE IN CHINA
CJA SFLD MI
??????????????????
6(?) F CNZ AJ
Any ideas?
Pic:

The second one is a standard type flatback Chinese mag, with 3 witness holes along the back, and the floorplate says:
30 RD MAGAZINE
MADE IN CHINA
CJA SFLD MI
??????????????????