Fade Homestay - M9 Bayonet | Rust Coat BS 0.79 was added to the game on January 08, 2015, alongside the "Full Spectrum" update. The skin is available in all "Chroma" cases.
☆ M9 Bayonet | Rust Coat | Battle-Scarred
CS:GO Karambit Rust Coat Battle Scarred + Hand Wraps Constrictor Factory New | SKIN SHOWCASE - YouTube