Not feeling this. Each texture is obviously just the same type of brushed look which makes it lack textural variety. Also having two silver textures, as similar as they are to one another is unnecessary. How I recommend you do it is have the one silver texture, black painted/flat secondary, and the copper. For this kinda look a four texture base doesn't achieve anything that a three texture base wouldn't
also, the black is a bit dark for what it is, and the copper should be a little more orange.

that promo image was a surprise to see but honestly i fw it

Nice work

"Oh cool weap.. Oh it's a skin.."