This is a Silver Skulls Tactical marine. Its a boltgun metal body with a heavy wash of badab black. The chest eagle and helmet is mithril silver. the Silver Skulls chapter is an old chapter that has been around for a while.
This assault marine is from the Iron Knights Chapter. They are thought to be a Imperial fist successor. This color scheme is black shoulder inset and helmet and a boltgun metal body. The body is not washed at all and the chest eagle is the same color as the body. The Shield on his shoulder is from a Assault Terminator kit. I trimmed the back nob off of it so it sits flush on the shoulder pad trim.
And here are the two marines together. Each has a distinct look and the difference in bases also makes them stand out separately.
Well That is it for now. Until next time.