Gun metal is a popular term that is used to describe a dark metallic gray color. This shade of gray is often associated with the color of gun barrels and other firearms. However, there are a variety of other shades of gray that can be used to describe this color. Some synonyms for gun metal include charcoal gray, slate gray, steel gray, and pewter. These shades of gray can vary in their undertones and intensity, but all share a similar dark, moody, and industrial vibe. Whether you are decorating your home or choosing the perfect outfit, there are many shades of gray that can help you achieve the sleek, powerful look of gun metal.