Released in June 2018 via the Horizon Case, the M4A1-S | Nightmare sits at the Classified tier within The Horizon Collection.

All five wear conditions are obtainable for M4A1-S | Nightmare, with float values spanning 0.00 to 1.00 — Factory New examples sit at the cleanest end of that range, while Battle-Scarred copies show the most visible wear.

A StatTrak™ version is available, which tracks confirmed kills made while the skin is equipped and typically commands a premium over the standard finish. Active listings for M4A1-S | Nightmare are tracked across 18 marketplaces, with prices spanning $7.09 to $402.50 depending on wear, variant, and seller.