hi everyone, i do not own other blued guns so i need your help! i just bought an old remington wingmaster (1973).it is really good looking and, when i bought it, it looked almost like new. as i came back home i noticed some rusted spots and i removed the rust. i disassembled the gun and i noticed that there is an orange patina in the internals: is it rust? the most strange thing is that also on the finish, wich looks good, if i use cleaning patches, they will show orange/brown particles on them. if i watch the bluing with a particular light, i can see an orange (ish) reflex! is the whole gun covered with rust? i'll try to post some pictures. thank you!!