18 Volumes (Complete)
10 Volumes (1st Reprint)
12 Volumes (Kanzenban)
16 Volumes (Renkaban)

with the arrival of the BD sets, i really would like to see more of the manga translated than vol 1 that was finished like 4 years ago 🙁 i love the anime and really want to read the full manga.
This is a nice sci fi tale of pirates, spaceships, and some cool designs.
My only complaint is that his daring rescue technically fails while still being chased. Which knocks off some of his awesome points for me.
So Space adventure cobra is about a cool man with a special gun that gets into a space adventure. The adventure himself is styled around interesting designs. Beautiful women, which dress half naked. I can only assume its because genetic engineering have gotten rid of obesity and ugliness.
Wish there was more translated. It doesn´t even feel old since the retro aspects almost seem purposeful. The big age of sci fi in america was in the 50s so this was about 20 years later. So some of that might be intentional.
This manga is pretty awesome. And here I thought that all mangaka knew how to draw were gigantic robots that do karate moves (comment meant half as joke, half as a criticism). This is much more what sci-fi is about. It's a shame only one volume has been translated.