COSTUME GALLERY
1) John Greycrow wears a costume of gray material with a collection of disassembled mechanical components covering the surface. Sometimes these components blend together in a kind of armor, other times they are clearly visible as separate weapon modules. Greycrow has a knack for grabbing different combinations of components from his uniform and assembling them into a variety of firearms and ranged weapons. The costume is cut diagonally to expose one arm and upper chest, although which side is exposed varies. [Uncanny X-Men (1st series) #211]
2) After joining the Hellions, Greycrow seemingly adopted a more relaxed outfit. He wore simple dark pants and a red cloak instead of his module suit. His right arm and chest still had a mechanical coating, though, and it was eventually shown that Greycrow had an actual cybernetic arm now, not just metal sleeves. He could disassemble the components of his cybernetics to form weapons as well. [Hellions #5]