They are both the Gilmour gun, but the Autogeek version has different colors (red vs. orange). Both are ready to hook up and use..... foam away
You might want to buy some quick disconnects at Lowes or HD along with a shutoff valve to make swapping between foam gun, nozzle, and no nozzle a little easier........ they aren't required, but do come in handy for the way I swap things around.