M4A4 | Mainframe je skin jurišne puške retkosti Industrial Grade iz The 2018 Nuke Collection. Ne ispada ni iz jedne kutije. Vrednost floata kreće se od 0,00 do 0,50, pa skin postoji u svih pet stanja istrošenosti, od Factory New do Battle-Scarred. Flavor text: „At the heart of it all“.
Broj skinova oružja u The 2018 Nuke Collection: 18. Osim M4A4 | Mainframe, tu ćeš naći i AUG | Random Access, AWP | Acheron, Five-SeveN | Coolant, Galil AR | Cold Fusion, Glock-18 | Nuclear Garden, M4A1-S | Control Panel, MAG-7 | Core Breach, MP5-SD | Co-Processor, MP7 | Motherboard, Negev | Bulkhead, Nova | Mandrel, P250 | Exchanger, P250 | Facility Draft, P90 | Facility Negative, PP-Bizon | Facility Sketch, Tec-9 | Remote Control i UMP-45 | Facility Dark.
Pogledaj sve M4A4 skinove.