I own this stove: The weight is 21oz if you omit the bottom bowl and the liner bowl (designed to protect the pot coating). I bought this the minute it hit the market and have never been disatisfied with it's performance. It is big in size and takes up a little too much pack space.. I consider it to be heavy at 21oz. Here's the good part though: It boils two cups of water in under 1 minute 15 seconds using less than 4.2 grams of fuel (I did the test and I can't find my exact figures on this at this moment... so working off memory!). This was achieved with the can inverted.

Like many posters above have commented, Primus could cut the weight of this stove in many areas. I hope they do.