ProMag AK-47 Drum Magazine 7.62x39 73 Rounds Polymer Black AK-A16

shipped fast and seems to work pretty well did limited function test and it stays wound but about every 15 rounds it slightly looses tension, but I did not have any failure to feeds when extracting rounds one at a time an slaming bolt down. Now where it gets dangerous is I almost lost a finger releasing the tension of the spring for storage so be carefull with that part. Directions were there and decent but didn't fully explain how to reset the tension spring and i had to youtube it