Model Variants (Including Prototypes)
N1K1 - Floatplane Design Designation; Allied codename of "Rex".
N1K1-J - Land-Based Design Designation based on the floatplane design; Allied codename of "George".
N1K1-Ja - Sans nose guns; all-wing gun mounts.
N1K1-Jb - Provision for 2 x underwing stores totaling 1,102lbs of ordnance.
N1K1-Jc - Provision for 4 x underwing stores totaling 2,204lbs of ordnance.
N1K2-J - "Improved" N1K1 Version; revised cowling, redesigned fuselage and redesigned land gear system.