The magnet is that little disc embedded in the top of the gun.
I'm not a fan of the Tau crisis suits. I don't like the broad, blocky chest and the little pin-heads. Forge World does a much better rendition, but those are prohibitively expensive -- more for display than for play, as far as I'm concerned. I proxy AT-43 models for my Tau crisis suits instead, but I figure I should have at least one official model, in case an opponent ever gets anal about true line-of-sight in a game. There are rumors that Games Workshop will be overhauling this sophomoric, outdated design next year. Couldn't happen too soon.
And here's a well I've been working on off-and-on for some time. I would like the shingles and the stones to have a greater difference in color, but I'm pretty sick of working on it. I think I'll add some variety of color to the stones, and I'll add some more verdigris to the copper and call 'er done. Maybe try out some pigments on it, too.