can you guys tell me what year it is? this is what i know so far: russain civialian model. from IMEZ. um matte black finish? what does a "blued" finish mean? when i shake the mak, i can hear the firing pin.. is that normal? i can just bearly move the slider side to side (how tight are tolorances supose to be?) the trigger can also move side to side a bit. all normal? this is my first fire arm period. the mag that it came with is a little "shincky" (makes that noise when moving the ramp up and down). what else can you guys tell me about it? cost me $170 out the door at a local shop. thanks discuss, opinions, thoughts, flames?