The M4A1-S | Knight is a Classified rifle skin from The Cobblestone Collection, distributed through the ESL One Cologne 2014 Cobblestone Souvenir Package.

The float range for this finish is restricted to 0.00–0.10, so Factory New and Minimal Wear are the only obtainable conditions on the open market. Battle-Scarred examples are not produced, so the most worn copies still retain a relatively clean appearance.

A Souvenir version is available, dropped exclusively from cases collected during Major Championship matches and stamped with that tournament's stickers. Active listings for M4A1-S | Knight are tracked across 16 marketplaces, with prices spanning $2,279 to $4,815 depending on wear, variant, and seller.