About M4A1-S | Mud-Spec
The M4A1-S | Mud-Spec in Factory New is the consumer-tier M4A1-S with the earthy camo finish at FN — entry-tier M4A1-S cover with warm-tone palette at peak clarity.
Why FN matters on Mud-Spec
FN preserves the design at peak clarity. The M4A1-S receiver gives the design generous visible canvas.
