I dont know, looks like CONTACT MATERIAL TO ME. aLSO HOW ABOUT CONTACT BUT UNDERWATEER. I now that bHK made a gun to shoot underwater. so imagine a rifle?
I think it would be a bit awkward to draw the pistol from that position on the chest, it looks cool but for practicality if it's not at his waist I would put it under his left arm kinda like those leather harnesses detectives wear. But whatever, all around good good