M4A4 | Converter is a Mil-Spec-tier rifle finish, part of The 2018 Inferno Collection and dropped from the London 2018 Inferno Souvenir Package.

The float range for this finish is restricted to 0.00–0.40, so Factory New, Minimal Wear, Field-Tested, and Well-Worn 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 M4A4 | Converter are tracked across 19 marketplaces, with prices spanning $0.82 to $36.41 depending on wear, variant, and seller.