So this is the goodie that comes with this months Dengeki Hobby which I mentioned the other day. And its a rather nice goodie too unlike those mags which give away a CD full of drivers which you can download anyway.
This is HRUDUDU - and if thats not enough of a mouthful, its full handle is "FF-X29A G-PARTS HRUDUDU." Designed for Hazel custom but also fits on Advanced Hazel, these parts also join together to be a stand alone support fighter - useful for when Hazel has a ton of bad dudes on its ass.
Now unless Bandai releases this as a separate kit or you feel like scratch building this, you'd better nag your importer to get hold of these fast. Now Hobby Japan are crafty buggers and made the HRUDUDU in such a way that your Hazel will look cooler with 2 HRUDUDU's attached - will show you what I mean in the up n coming scans. The issue costs 1050 yen yen and if your importer charges you more than double, wait until you receive it then shoot him/her in the kneecaps.
Read a bit more about HRUDUDU.