Grit, determination, heart....CONTRACT KILLER. Style, function, innovation..Grit. Its the same focus that every fighter feels that fuels us to push ourselves, the industry, the style of life that we live, We live for the moment, the smell of blood, the smell of domination.... The smell of victory. CONTRACT KILLER CLOTHING has branched out into the next movement of mixed martial art fighting with T-shirts, fight shorts, hats, gear bags, backpacks.