Well, the previous post have already got the right answer, it's gundam kestrel.
Your kit looks like in Furoko grade. I remember it was the bonus kit from a magazine called DENGEKI HOBBY. It's pretty much looks like the First Grad, but it is rarer than any First Grades. If you want to check more, here is the link for you, (it is written in mandarin, I 'm not really sure if you can understand all of them, but I will put here any way:)
http://acg.78dm.net/ct/21219.html
I hope this would help you. byw, your legs are on the opposite direction...
