M4A1-Red Line is an assault rifle variant of M4A1.
It has a brown base with red stripes overlain, along with a black handle and some other parts.
- CF Japan
- CF Vietnam
- CF Russia
- CF Philippines - Available through Events
- CF North America
- CF Europe - Available as dogtag reward (30 days)
- CF Brazil - Available as 5 Years Anniversary Crate along with AWM - Red Line (GP)