After more research, you are right about the nozzle, but thats it. Everything else is included. The hose is already set up for MIG or FLUX, it comes with the adapter and hose and a nozzle is $8 (WTF they wouldn't just include that, who knows)
See below excerpt. Source http://www.centurytool.net/K2788_2_C..._p/k2788-2.htm
"The Century Wire Feed 180 Flux-Cored/MIG Wire Feed Welder built with the professional builder in mind. With five heat settings which allow you to weld from 24 ga. sheet metal up to 3/16” steel in a single pass , make this a nice step up from the basic unit giving you more flexibility and versatility. Welds 20ga. to 3/16" using Flux-Cored Wire in a single pass and to 5/16" in Multi Pass. Easily convert to MIG with the addition of SUPERARC® L-56 wire and MIG Nozzle (#KH725)
. Includes Welder Cart, 1 lb spool of .035 NR-211-MP flux-cored wire, 10 Ft. Gun and cable assembly, Regulator and Hose assembly, 10 Ft. Work cable and clamp, Spare contact tips, Flux-cored nozzle, Instruction manual, 10 Ft. Input cable with attached plug, Three-year warranty parts and labor, 90 days on gun and cable assembly."