This MP5-SD is the results of my current internal Copper Oxidation (Patina) stages using shims intended for heatsinks to get different results in texture to port to Copper textures in patterns. This MP5 has a Copper Frame with a Copper Oxidation Patina flame pattern created from masking off most of the frame and putting it in a patina container. Leaving a vector like blue flame pattern on the Copper frame. This skin was made for Patina but the Alpha maps added so much to the copper texture I had to make it Gunsmith.